{"product_id":"generic-7-mm-trim-screws-for-gm-25-pack-black-phosphate-oem-fit-for-interior-exterior","title":"Generic 7 mm Trim Screws for GM - 25-Pack Black Phosphate, OEM-Fit for Interior \u0026 Exterior","description":"\u003cp\u003e\u003cstrong\u003eThese are factory-equivalent 7 mm indented-hex trim screws (thread #8 \/ M4.2-1.41), sold in a set of 25, designed to replace GM Part# 11503396 for interior and exterior trim, splash shields, and engine bay fastenings.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen you need reliable, exact-fit fasteners for GM vehicles, using the same screws the factory installs prevents fitment issues, stripped heads, and corrosion problems later. This kit contains 25 black phosphate finish screws with a 7 mm indented-hex head and a loose washer (12 mm OD), matching original equipment specifications for many Chevrolet, Buick, Oldsmobile, Pontiac, Cadillac and GMC Truck body styles.\u003c\/p\u003e\n\n\u003ch3\u003eWill these screws fit my GM part or panel?\u003c\/h3\u003e\n\u003cp\u003eThese screws are a direct replacement for GM Part# 11503396 and match the factory thread, length, and head geometry used across numerous GM panels. If your original fastener uses a 7 mm indented-hex head and a #8 thread, this set will be compatible.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThread spec: #8 (M4.2-1.41) — matches OEM threading.\u003c\/li\u003e\n  \u003cli\u003eLength: 3\/4\" (19 mm) — typical for trim and splash shield attachment.\u003c\/li\u003e\n  \u003cli\u003eHead: 7 mm indented hex with 12 mm outside diameter loose washer — identical seating.\u003c\/li\u003e\n  \u003cli\u003eFinish: black phosphate — same look and corrosion resistance as factory parts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow are these screws different from generic hardware-store fasteners?\u003c\/h3\u003e\n\u003cp\u003eGeneric screws often vary in thread pitch, head diameter, or washer fit and can lead to loose panels or damaged clips. These screws are manufactured to match the OEM tolerances used on the assembly line so they fasten precisely and hold as intended.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOEM-matched thread pitch prevents cross-threading and strip-out.\u003c\/li\u003e\n  \u003cli\u003eProper head geometry ensures correct engagement with factory tools.\u003c\/li\u003e\n  \u003cli\u003eLoose washer dimension matches original sealing and load distribution.\u003c\/li\u003e\n  \u003cli\u003eBlack phosphate finish gives consistent appearance and corrosion resistance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhere on the vehicle are these typically used?\u003c\/h3\u003e\n\u003cp\u003eThese screws secure a variety of trim and protective parts both inside and outside the car. Common uses include splash shields, inner fender liners, engine bay trim, bumper covers, and interior panels where a compact indented-hex head is required.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSplash shields and wheel well liners — resists road debris and moisture exposure.\u003c\/li\u003e\n  \u003cli\u003eEngine bay trim and brackets — holds components under heat and vibration.\u003c\/li\u003e\n  \u003cli\u003eBumper and exterior\/underbody panels — low-profile finish for clean appearance.\u003c\/li\u003e\n  \u003cli\u003eInterior trim attachments where OEM fasteners are specified.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I install and torque these screws for best results?\u003c\/h3\u003e\n\u003cp\u003eUse a matching 7 mm hex driver designed for indented or recessed heads to avoid cam-out. Tighten until snug and do not over-torque; these are sheet-metal fasteners intended to clamp trim, not as structural bolts.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDriver: 7 mm indented-hex socket or bit for correct engagement.\u003c\/li\u003e\n  \u003cli\u003eTightening: hand or low-torque driver; stop when trim seats firmly.\u003c\/li\u003e\n  \u003cli\u003eReplacement: use OEM-matched screw for any removed fasteners to retain factory fit.\u003c\/li\u003e\n  \u003cli\u003eStorage: keep dry and sealed to preserve black phosphate finish.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Professional technicians restoring GM vehicles, DIY mechanics replacing worn or missing trim hardware, and restoration projects seeking exact-fit, assembly-line equivalent fasteners will benefit from this set. If you need reliable replacements that match GM Part# 11503396 in thread, length, head style, and finish, this 25-piece kit supplies the correct screws for interior and exterior trim, splash shields, engine bay fittings, and other commonly fastened panels.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these screws the exact replacement for GM Part# 11503396?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. They match the OEM thread, length, head, and washer dimensions for Part# 11503396.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many screws come in one set and what finish do they have?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This listing includes 25 screws finished in black phosphate for corrosion resistance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Generic","offers":[{"title":"Default Title","offer_id":55164096250199,"sku":"B0C3XKSNFL","price":31.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/generic-7mm-indented-hex-front-view.jpg?v=1790350121","url":"https:\/\/britishgarage.co.uk\/products\/generic-7-mm-trim-screws-for-gm-25-pack-black-phosphate-oem-fit-for-interior-exterior","provider":"British Garage","version":"1.0","type":"link"}