The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-159-7967, 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 19 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-159-7967 |
| Primary Part Number | NK525-416R6 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Nylok Llc |
| Status | ACTIVE |
| Extended Washer Thickness | 0.028 INCHES MINIMUM AND 0.033 INCHES MAXIMUM IN |
| Head Height | 0.096 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Fastener Length | 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.500 INCHES NOMINAL IN |
| Thread Length | 0.313 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | ROUND EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Locking Feature | PELLET THREADS |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 2330 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.437 INCHES NOMINAL 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 |
|---|---|
| NK525-416R6 PRIMARY | Nylok Llc (USA) |
NSN 5305-00-159-7967 is a Screw,cap,socket Head, manufactured by Nylok Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-159-7967 has 1 manufacturer part number on file: NK525-416R6 (Nylok Llc).
Key specifications for NK525-416R6: Extended Washer Thickness: 0.028 INCHES MINIMUM AND 0.033 INCHES MAXIMUM IN; Head Height: 0.096 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Fastener Length: 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL. 19 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.