The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-337-6974, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 8 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-337-6974 |
| Primary Part Number | 803-4384538 PIECE 42L1 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Thread Length | 4.250 INCHES NOMINAL IN |
| Criticality Code Justification | ZZZX |
| Nominal Thread Diameter | 0.875 INCHES IN |
| Departure From Cited Designator | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 9 |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 803-4384538 PIECE 42L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 803-4384538 PIECE42 | 3/1 Design control — primary reference U.S. Government activity |
| 7/8-9UNC-3A X 4 1/4 IN TYVI | 5/1 Secondary reference U.S. Government activity |
| FF-S-86 QQ-N-286 GR500 CLASS A | 4/1 Identification reference U.S. Government activity |
| FF-S-86 QQ-N-286 GR500 CLASS AL1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 7/8-9UNC-3A X 4 1/4 IN TYVIL1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 5305-01-337-6974 is a Screw,cap,socket Head, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-337-6974 has 1 manufacturer part number on file: 803-4384538 PIECE 42L1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 803-4384538 PIECE 42L1: Thread Length: 4.250 INCHES NOMINAL IN; Criticality Code Justification: ZZZX; Nominal Thread Diameter: 0.875 INCHES IN; Departure From Cited Designator: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS. 8 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.