3/8-16 x 3/4 18-8 Stainless Steel Flat Head Cap Screw with Nylon Insert gives buyers an exact overall length for a countersunk screw, not an under-head measurement. A buyer moving from socket head cap screws should remember that flat heads are not measured from under the head. The 82-degree flat head needs a matching countersink cut cleanly and concentrically so the cone bears correctly and the head seats true.

Typical applications include countersunk hinge hardware, latch plates, and access doors, where nothing proud should catch passing material or hands. For higher preload potential and a deeper socket, review 1960 Series 18-8 SHCS with Nylon Insert.

Slight magnetism from cold working can be normal for 18-8 stainless, so final material selection should reflect the assembly conditions. The locking pellet is installed in-house on supported socket-cap sizes, with unusual requests handled through quoting.

Technical Highlights

• Material: 18-8 Stainless Steel
• Thread Size: 3/8-16
• Length (overall - includes head): 3/4 in.
• Head Style: 82° Countersunk Flat
• Drive Type: Internal Hex
• Locking Feature: Nylon insert providing prevailing torque
• Nylon Insert Diameter (P): 9/64 in.
• Nylon Insert Location (N): 7/32 in. +/-1/2 pitch
• Head Dimensions: ASME B18.3

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.