Best License Plate Screws for Plastic Mounts and M6 Threads

#1 · Best Overall

1. LivTee Stainless Self-Tapping Screws

• Material: Stainless Steel
• Thread Size: 1/4-20
• Fastener Size: 1/4 in x 3/4 in

Best for: Plastic-retainer weather protection.

Why it ranks #1: Its four 1/4-inch-by-3/4-inch self-tapping screws target common plastic mounting points, and the listing specifies 316 stainless steel.

316 stainless steel is the defining feature here, offering rust resistance through rain, snow, and car washes. LivTee pairs that material with standard 1/4-by-3/4-inch self-tapping screws, giving owners of plastic license-plate mounting points a straightforward option for securing a plate or frame.

The 1/4-inch diameter and 3/4-inch length are specified for plastic mounting points commonly found on U.S. vehicles, helping buyers match the screw to that style of retainer. Self-tapping threads make the set relevant to those mounts, while the 316 stainless steel construction addresses exposure to weather and car washes. The flat head and black finish suit a low-profile, dark appearance. This is a four-screw set, so it covers a single plate mounting rather than providing spare hardware.

Skip it if you have metal threaded mounting holes; OttoSpeed SLPS-BZP is also specified for plastic or nylon inserts, so choose a product explicitly suited to your mount.

Choose this set if your vehicle uses plastic plate retainers and you want stainless steel fasteners for a plate or frame. Its four screws suit one mounting; vehicles with metal threaded holes need a different thread type.

Listed on Amazon as: LivTee Rustproof License Plate Screws for Securing License Plates Frames and Covers on Cars and Trucks, 4 Sets Premium Stainless Steel Self Tapping Mounting Bolts (Black Zinc Plated)

#2 · Best Fit Guidance

2. OttoSpeed Rustproof Screws

• Thread Size: 1/4
• Fastener Size: 1/4-14 x 3/4"

Best for: Domestic plastic-insert mounts.

Why it ranks #2: The listing clearly targets nylon or plastic inserts, specifies 1/4-14 x 3/4-inch self-tapping hardware, and cautions against metal-threaded mounts.

OttoSpeed explicitly targets nylon or plastic screw inserts, giving owners of compatible domestic vehicles a clear mounting application. Its black-slotted, self-tapping screws use a 1/4-by-3/4-inch size, while the product also spells out an important boundary: it is not for metal threaded mounting holes.

The self-tapping thread is specified for plastic or nylon inserts, which suits the listed mounting style on many domestic makes, including Ford, Chevrolet, Dodge, GMC, and Jeep. The 1/4-14-by-3/4-inch size gives buyers a reference for comparing existing hardware. A black-slotted finish offers a dark appearance at the plate, but fit depends on the insert: OttoSpeed excludes metal-threaded holes and notes that some imports use metric machine screws.

Skip it if you have metal threaded holes or an Audi, Volkswagen, or BMW mount; Aootf B08RJ618TW lists M6 hardware for a different mounting specification.

This is a practical match for a domestic vehicle with plastic or nylon plate inserts and a need for black self-tapping screws. Avoid it for metal threaded mounts, including the listed metric-hole import applications.

Listed on Amazon as: OttoSpeed Rustproof License Plate Screws (4-Pack, Black-Slotted)

#3 · Best Simple Black Set

3. Suspension Dudes Black Screws

• Material: Stainless Steel
• Thread Size: 1/4
• Fastener Size: 1/4 in x 3/4 in

Best for: Black hex-head plastic-mount screws.

Why it ranks #3: This stainless four-pack is designed for plastic retainers and uses 1/4-inch-by-3/4-inch fasteners, a straightforward fit for many domestic vehicles.

A hex head gives these Suspension Dudes screws a distinct drive style, while their stainless steel construction is intended for outdoor exposure. The 1/4-by-3/4-inch fasteners are made for nylon or plastic mounting clips, serving owners who need replacement hardware for that type of plate mount.

Suspension Dudes specifies these screws for nylon or plastic retainers commonly used on American cars, trucks, and SUVs. That stated mount type helps narrow compatibility before installation, while the 1/4-by-3/4-inch size provides a concrete reference for checking an existing screw. Stainless steel construction is intended to handle rain, road spray, car washes, and changing weather. The black finish and hex head give the fasteners a different appearance and drive shape than slotted plate screws.

Skip it if you have metal threaded plate holes; OttoSpeed SLPS-BZP is also for plastic or nylon inserts, so look for hardware specified for metal threads instead.

These suit owners replacing plate screws in nylon or plastic clips who want a black hex-head style and stainless steel construction. The listed fit is for plastic retainers, so metal-threaded mounts call for another fastener type.

Listed on Amazon as: Suspension Dudes License Plate Screws with Rustproof Finish (4-Pack, Black)

#4

4. Valardoh Stainless Screws

• Material: Stainless Steel
• Thread Size: 1/4-14-3/4"
• Fastener Size: 2.8 in

Best for: Eight-screw domestic-car set.

Why it ranks #4: The eight-piece stainless set suits many domestic cars and trucks, but its listing specifically excludes Toyota, Honda, Audi, BMW, and Tesla.

Eight stainless steel screws and a stated fit for most domestic cars and trucks make the Valardoh set a focused replacement option. The listing also names important exclusions—Toyota, Honda, Audi, BMW, and Tesla—so buyers can use those fit boundaries to narrow their choice.

The eight-piece quantity gives buyers multiple fasteners for a plate mounting or replacement needs, while the stainless steel construction is presented as rust-proof. Valardoh describes the screws as anti-rattle, a relevant feature for owners seeking quieter plate hardware. Its stated compatibility is broad for domestic cars and trucks but explicitly excludes Toyota, Honda, Audi, BMW, and Tesla. The 1/4-14-3/4-inch thread specification is another detail to compare with the existing mount before installation.

Skip it if you have a Toyota, Honda, Audi, BMW, or Tesla; OttoSpeed SLPS-BZP lists fit for several domestic makes with plastic or nylon inserts.

This is for owners of compatible domestic cars or trucks who want eight stainless steel screws described as anti-rattle. The named make exclusions are decisive, so it is not a broad universal choice.

Listed on Amazon as: 8PCS Premium Stainless Steel License Plate Screws, Rust-Proof & Anti-Rattle License Plate Bolts(Black) (Black-8PCS)

#5 · Best Anti-Theft Bundle

5. LivTee Anti-Theft Kit

• Material: Nylon, Stainless Steel, Zinc
• Thread Size: M6
• Fastener Size: M6

Best for: Complete tamper-resistant mounting kit.

Why it ranks #5: The M6 security kit includes a matching special screwdriver, nylon inserts, washers, foam pads, covers, and nuts for a more complete installation.

A dedicated plum-shaped anti-theft wrench comes with LivTee’s M6 security screws, giving installation and later removal a specific tool. The kit also includes nylon inserts, washers, foam pads, and covers, making it a more complete option for buyers assembling plate hardware rather than replacing screws alone.

The 1/4-by-3/4-inch M6 screws use an anti-theft point, and the included special wrench is intended for that fastener style. LivTee supplies eight screws, washers, foam pads, and covers, plus four nylon inserts and four black nuts, so the hardware can address several parts of a plate mounting. Stainless steel 304 construction is stated to resist corrosion and weather. The listed 0.35-inch groove diameter and M6 thread provide useful compatibility checks before fitting.

Skip it if you want ordinary self-tapping screws for plastic retainers; LivTee B0972S4R8L specifies that simpler mounting style.

Choose this kit if you want security-style M6 screws with matching tool and assorted mounting accessories. Check the mount’s thread and groove dimensions first, and note that the kit has fewer inserts and nuts than screws.

Listed on Amazon as: LivTee Anti Theft License Plate Screws Kits for Securing Frames and Covers, M6 (1/4") Tamper Proof Screws, Fastener Nut, Caps Cover for Front Rear Frame Holder Mounting – Black

#6

6. YALOK Anti-Theft Kit

• Material: Stainless Steel
• Thread Size: M6
• Fastener Size: M6

Best for: Tamper-resistant plate mounting.

Why it ranks #6: Its M6 stainless security screws use a tamper-resistant head and require the supplied screwdriver, making the set relevant when theft deterrence matters.

A center-pin security head requires the included anti-theft screwdriver rather than an Allen wrench, making ordinary Allen-tool removal impractical. YALOK combines that tamper-resistant design with 304 stainless steel screws and a black coating for buyers prioritizing added resistance to casual license-plate removal.

The button-head screws use a distinctive center-pin design, and YALOK says installation and removal require its supplied anti-theft screwdriver. That dedicated tool changes the service workflow: keep it available when you need to remove the plate, rather than relying on a standard Allen wrench. The 304 stainless steel construction and black coating are stated to resist rust, while the M6 size identifies the thread specification. The kit is an eight-piece set, useful for a mounting that needs multiple fasteners.

Skip it if you want ordinary tool access for frequent plate changes; LivTee B0972S4R8L uses standard self-tapping screws for plastic mounting points.

Pick this kit if deterring casual plate removal matters and you can keep its dedicated screwdriver available for maintenance. Its M6 thread specification makes mount compatibility an important consideration before installation.

Listed on Amazon as: YALOK Anti Theft License Plate Screws Kits- Rustproof Stainless Steel Car Tag Plate Mounting Hardware, M6 (1/4") Tamper Proof Fastener Nut, Caps Cover for Front Rear Frame Holder Mounting(AT-Black/8)

#7

7. AOOTF Black Anti-Theft Kit

• Material: Stainless Steel
• Thread Size: M6
• Fastener Size: M6

Best for: Black security kit with covers.

Why it ranks #7: The M6 kit combines 304 stainless screws with black caps, nylon plug-ins, nuts, and rattle-proof pads, though the fit details are less explicit.

Black screw caps cover the pan-head fasteners, giving this Aootf kit a tidy, coordinated look while its title identifies the screws as anti-theft hardware. The 304 stainless steel construction and M6 specification make it relevant to buyers seeking black security-oriented plate mounting components.

The kit lists black screws, caps, nylon plug-ins, fastener nuts, and rattle-proof pads, bringing several mounting and finishing components together. The pads are relevant for buyers seeking a more stable, quieter plate setup, while the caps cover the screw heads for a cleaner appearance. Aootf identifies the screws as 304 stainless steel and describes an electrophoretic black process that will not fade. The M6 thread and Type A point provide useful specifications for matching the mount.

Skip it if you need an explicitly included matching security driver; YALOK B0977ZZGYL states that its anti-theft screwdriver comes with the screws.

Choose this kit if black caps, rattle-proof pads, and security-oriented M6 hardware fit your plate-mounting needs. The supplied details do not confirm a dedicated driver, so consider removal access before installation.

Listed on Amazon as: Aootf Black Anti Theft License Plate Screws, Stainless Steel Fasteners

#8

8. Middrivr Anti-Theft Screws

• Material: Stainless Steel
• Thread Size: M6
• Fastener Size: M6 x 20mm

Best for: Black M6 tamper-proof screws.

Why it ranks #8: These black stainless tamper-resistant screws are listed as 1/4-by-3/4-inch M6 hardware for many vehicles, but fewer included components are specified.

Middrivr pairs a tamper-proof label with black stainless steel screws in a standard 1/4-by-3/4-inch M6 size. The stated corrosion resistance and listed use across motorcycles, trucks, and SUVs make this a candidate for buyers seeking black hardware across several vehicle types.

The M6-by-20mm specification gives buyers a concrete size to compare with their mounting point, and the listing identifies the screws as suitable for most motorcycles, trucks, and SUVs. Middrivr says the black stainless steel is more corrosion-resistant than galvanized screws, which matters for hardware exposed to weather. The hexagonal head offers a defined head style, but the supplied details do not state that a special driver is included; buyers should account for that when planning installation and future removal.

Skip it if you require a confirmed dedicated security wrench in the box; LivTee B09LCZV46G explicitly includes its plum-shaped anti-theft screwdriver.

This suits buyers seeking black M6 hardware for a motorcycle, truck, or SUV whose mount matches the listed size. The listing calls the screws tamper-proof but does not confirm a matching tool, a relevant service limitation.

Listed on Amazon as: Anti Theft License Plate Screws Kits,M6 (1/4") Tamper Proof Screws

#9

9. WowHand Black Screw Kit

• Material: ABS, Nickel, Nylon, Stainless Steel
• Thread Size: M6
• Fastener Size: 0.25 in

Best for: Multi-piece black mounting kit.

Why it ranks #9: The package lists screws, foam pads, washers, covers, nylon inserts, and a spanner, but its stated left-hand thread is a compatibility concern.

Eight stainless steel screws arrive with pads, washers, covers, nylon inserts, and a spanner, making this WowHand set more than a screw-only replacement. That assortment suits buyers who want several plate-mounting components together, with foam pads specified to cushion contact and help prevent scratches.

The 41-piece listing includes eight screws and eight each of foam pads, washers, covers, and nylon inserts, plus one spanner. That mix lets buyers handle cushioning, screw support, and covering the heads within one kit; the description says the pads are shockproof and noise-proof and help prevent scratching. Stainless steel screws are presented as weather-resistant and corrosion-resistant. The listed 0.25-inch compatible groove diameter and M6 thread help identify the intended hardware, though the thread style is listed as left hand.

Skip it if you need right-hand threads; LivTee B09LCZV46G lists right-hand M6 screws and includes a dedicated security tool.

This kit fits buyers who want multiple plate-mounting accessories together, including pads and covers, rather than just screws. Check the listed left-hand thread carefully before choosing it for an existing mounting point.

Listed on Amazon as: 8 Sets Black License Plate Screws – Updated Rustproof Stainless Steel License Plate Bolts, Premium Screw Kit for License Plates Frames on Cars

#10

10. ZXFOOG Anti-Theft Screws

• Material: Stainless Steel
• Thread Size: M6
• Fastener Size: M6

Best for: Chrome-cap security hardware.

Why it ranks #10: The listing identifies stainless M6 fasteners and chrome caps but gives limited fit and package details, making compatibility harder to establish.

Chrome caps distinguish this ZXFOOG anti-theft screw set, pairing a visible bright finish with stainless steel M6 fasteners. It is aimed at buyers seeking security-oriented plate hardware with a chrome accent; the supplied specifications identify a right-hand fully threaded design and several listed head styles.

The title identifies these as anti-theft screws and specifies stainless steel bolts with chrome caps, making the set relevant when both security-oriented hardware and a bright plate detail matter. Its M6 thread and 0.25-inch compatible groove diameter give buyers two specifications to compare with their mounting point. The listing names button, flat, hex, and socket head styles, but does not explain which tools or accessories are supplied, so verify the particular kit contents before planning installation or removal.

Skip it if you need a confirmed included security driver and accessories; YALOK B0977ZZGYL explicitly includes its matching anti-theft screwdriver.

Consider this set if chrome caps suit your plate appearance and the M6, right-hand thread matches your mount. The supplied details do not establish a security-tool package, so it may not suit buyers needing one included.

Listed on Amazon as: ZXFOOG Anti Theft License Plate Screws, Stainless Steel Bolts, Chrome Caps