The Screw,shoulder, cataloged under National Stock Number 5305-01-541-5356, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-541-5356 |
| Primary Part Number | 167-6985304-51 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Width Across Flats | 0.187 INCHES NOMINAL IN |
| Head Height | 0.125 INCHES NOMINAL IN |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Shoulder Length | 0.281 INCHES NOMINAL ALL SHOULDERS IN |
| Shoulder Diameter | 0.305 INCHES MINIMUM AND 0.315 INCHES MAXIMUM ALL SHOULDERS IN |
| Thread Length | 0.219 INCHES NOMINAL IN |
| Shoulder Shape | ROUND ALL SHOULDERS |
| Material Document and Classification | 57280/ZYTEL 101 MFR REF SINGLE MATERIAL RESPONSE LOCKING FEATURE |
| Material Document and Classification | QQ-S-763,CL 316,CD B FED SPEC SINGLE MATERIAL RESPONSE FASTENER |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DOUBLE CHAMFER |
| Thread Direction | RIGHT-HAND |
| Locking Feature | PELLET ALL SHOULDERS |
| Minimum Tensile Strength | 110000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | PLASTIC NYLON LOCKING FEATURE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.438 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 |
|---|---|
| EB211047545F | Naval Sea Systems Command (USA) |
| 167-6985304-51 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| H541-0298-51 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-541-5356 is a Screw,shoulder, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-541-5356 has 2 manufacturer part numbers on file: EB211047545F (Naval Sea Systems Command), 167-6985304-51 (Naval Sea Systems Command).
Key specifications for 167-6985304-51: Width Across Flats: 0.187 INCHES NOMINAL IN; Head Height: 0.125 INCHES NOMINAL IN; Fastener Length: 0.500 INCHES NOMINAL IN; Shoulder Length: 0.281 INCHES NOMINAL ALL SHOULDERS IN. 20 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.