1/4-20 x 1 1/2 18-8 Stainless Steel Flat Head Cap Screw with Nylon Insert helps avoid length-selection errors common when switching from socket head cap screws. For example, a 1/4-20 x 1 flat head screw fits within one inch overall because the head is included in that length. A countersunk head bears on the cone rather than a broad underside, so clamp load should not be treated like a full socket head cap screw.

For display faces, fixture panels, or visible stainless hardware, confirm countersink geometry, thread engagement, and whether the nylon insert suits the service conditions. For higher preload potential and a deeper socket, review 1960 Series 18-8 SHCS with Nylon Insert.

The 18% chromium and 8% nickel austenitic stainless material is commonly selected for general corrosion resistance, clean appearance, and ordinary washdown exposure. Cold Headers can handle supported non-catalog pellet-size requests through in-house pelletizing.

Technical Highlights

• Material: 18-8 Stainless Steel
• Thread Size: 1/4-20
• Length (overall - includes head): 1 1/2 in.
• Head Style: 82° Countersunk Flat
• Drive Type: Internal Hex
• Locking Feature: Nylon insert providing prevailing torque
• Nylon Insert Diameter (P): 7/64 in.
• Nylon Insert Location (N): 3/16 in. +/-1/2 pitch
• Head Dimensions: ASME B18.3

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