Clamp Screw (tlr-1 + 2)

The Streamlight Clamp Screw, part 691152, is the threaded fastener that locks a TLR-1 or TLR-2 series weapon light to its rail clamp. It's a small part with an outsized job: it holds the entire light assembly in place under recoil. If your clamp screw is stripped, lost, or backing out under repeated firing, this is the direct replacement. Officers, armorers, and competitive shooters who run rail-mounted lights keep spares on hand because a failed screw takes a working light out of service. This component fits the standard TLR-1 and TLR-2 clamp hardware so your light returns to a secure, repeatable mount.

This is a factory Streamlight replacement screw matched to the TLR-1 and TLR-2 clamp system, not a generic substitute. Using the correct screw matters because the clamp on these lights relies on consistent thread engagement to hold tension against recoil on both Picatinny and Glock-style rails. The wrong fastener can strip the clamp, leave the light loose, or shift point-of-aim on lights paired with a laser. Streamlight builds the TLR-1 and TLR-2 platform around quick-attach clamps, and this screw is the wear part that takes the load when you torque the clamp down. Keeping a known-good screw in your kit means you can swap a damaged one in the field instead of pulling the whole light off duty. The screw works with the broader TLR-1 family of lights and clamp assemblies.

Reach for this screw when a clamp won't hold tension, the head is stripped from over-torquing, or you've simply lost the original during a cleaning or rail change. Agencies that maintain a pool of weapon lights buy these in quantity to keep their tactical lights serviceable across an armory. If you're rebuilding or upgrading a setup, browse our full TLR-1 selection and related TLR-1 HL models. For other small fasteners and mounting hardware, our hardware and screw pack listings cover the common replacement parts that keep a duty light running.