Generic #8 SEMS Phillips Interior Trim Screws — 50-Piece Black Assortment, 5 Lengths, Factory-Style

These 50 black #8 SEMS Phillips interior trim screws are factory-style, exact-fit fasteners for GM and GMC vehicles, supplied in five common lengths with attached washers for quick, secure reassembly.

Replace lost or damaged interior hardware with a ready-to-use set that mirrors the screws used on assembly lines. Each pack includes ten screws at five popular lengths to cover a wide range of trim, bezel, headliner and panel fastening needs. The screws come with a countersunk #6 Phillips head and a loose washer already attached, finished in black phosphate to blend with original interiors and resist wear.

What parts of my vehicle can these screws repair?

These screws are designed for interior trim applications throughout many GM and GMC vehicles. They suit areas where original factory screws secure panels, molding and small bezels, restoring factory appearance and function without improvised substitutes.

• A-pillars and B-pillars: trim and garnish panels
• Door panels and sill plates: secure edging and trim
• Dash bezels and consoles: instrument surrounds and small covers
• Headliner molding, sun visors, dome light trim and mirror mounts

How do I choose the right screw length from the set?

The assortment contains five lengths—1 1/4", 1", 11/16", 5/8" and 1/2"—each supplied in groups of ten. Match the original screw length when possible; if unsure, test fit the shortest length that fully engages the threads without bottoming out or protruding.

• 1 1/4" for deeper panels and multi-layer assemblies
• 1" for medium depth trim and bezel attachments
• 11/16", 5/8", 1/2" for thin moldings, clips, and headliner trim
• Always inspect backing surface to prevent over-penetration

Are these screws the same as original factory hardware?

Yes — these are factory-style OEM interior trim screws intended to match the fit and function of the original screws used in assembly. They replicate the thread pitch, head style and washer arrangement, so they reinstall like original fasteners without modifying panels.

• #8 thread pitch matches many factory interior fasteners
• #6 Phillips countersunk head for proper seating in molded trim
• Loose countersunk washer included for correct compression and finish
• Black phosphate finish recreates factory appearance

Will these screws resist corrosion and wear inside the cabin?

The black phosphate finish offers basic resistance to abrasion and common interior moisture, and it preserves a low-profile, OEM look. For environments with higher humidity or contact with cleaning chemicals, consider periodic inspection and replacement if finish wear appears.

• Black phosphate reduces light corrosion and hides blemishes
• Countersunk heads prevent snagging on upholstery
• Loose washer helps distribute load and protect trim faces
• Not a stainless option—inspect in corrosive conditions

Who is this for: This 50-piece kit is aimed at DIY restorers, mechanics, and detailers rebuilding or refreshing GM-family interiors—Chevrolet, Buick, Oldsmobile, Pontiac, Cadillac and GMC trucks—who need an OEM-style, mixed-length supply of trim fasteners. If you work on multiple interior panels, door surrounds, dash bezels or headliner components, this set saves time by providing common lengths and the factory-style washered heads needed for accurate, professional reassembly.