The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-326-9489, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 16 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-326-9489 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 0.312 INCHES NOMINAL IN |
| Head Height | 0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Fastener Length | 0.750 INCHES NOMINAL IN |
| Thread Length | 0.625 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Locking Feature | PELLET OR STRIP OR PATCH THREADS |
| Minimum Tensile Strength | 80000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | NICKEL ALLOY 400 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.550 INCHES MINIMUM AND 0.565 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 |
| Reference | Meaning |
|---|---|
| 801-6405354 FIND 17 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 122-5343945 PC20 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 167-6404628-102 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| MILS1222TYII .3 75-16UNRC-3AX.0 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 211033337 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 585-6406777-66 | 5/9 Secondary reference Naval Sea Systems Command |
| MILS1222TYII 3/8-16UNRC-3AX3/4LG | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 5343945 ITEM NO 20 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| M1222SC6C312NALN | 2/2 Government specification standardization U.S. Government activity |
| 122-5486620 ITE | C/1 Advisory reference — outside the item-of-supply concept Huntington Ingalls Inc Div Newport News Shipbuilding |
| MILS1222 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 563-6404329-59 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 122-5343921 ITE | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| QQ-N-281,FF-S-8 6,TY-VI,NICU,SE | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 60-16-9618 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| FF-S-86 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-326-9489 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-326-9489: Width Across Flats: 0.312 INCHES NOMINAL IN; Head Height: 0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN; Fastener Length: 0.750 INCHES NOMINAL IN; Thread Length: 0.625 INCHES NOMINAL IN. 16 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.