The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-266-8540, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Nylok Llc. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-266-8540 |
| Primary Part Number | 7915810-00 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Nylok Llc |
| Status | ACTIVE |
| Width Across Flats | 0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN |
| Head Height | 0.086 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Fastener Length | 0.850 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-13724 CL 4 MIL SPEC SINGLE TREATMENT RESPONSE FASTENER |
| Thread Length | 0.250 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | BUTTON |
| Thread Direction | RIGHT-HAND |
| Locking Feature | PATCH THREADS |
| Color | BLACK FASTENER |
| Surface Treatment | OXIDE FASTENER |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | PLASTIC LOCKING FEATURE |
| Material | STEEL CORROSION RESISTING FASTENER |
| Thread Series Designator | UNF |
| Head Diameter | 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7915810-00 PRIMARY | Nylok Llc (USA) |
| Reference | Meaning |
|---|---|
| 7915810-00 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5305-01-266-8540 is a Screw,cap,socket Head, manufactured by Nylok Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-266-8540 has 1 manufacturer part number on file: 7915810-00 (Nylok Llc).
Key specifications for 7915810-00: Width Across Flats: 0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN; Head Height: 0.086 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Fastener Length: 0.850 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-13724 CL 4 MIL SPEC SINGLE TREATMENT RESPONSE FASTENER. 18 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.