The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-282-9607, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is J & S Precision Products Co (inc). Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-00-282-9607 |
| Primary Part Number | 5/16-18 UNC-2A X 2-1/2 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | J & S Precision Products Co (inc) |
| Status | ACTIVE |
| Head Height | 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN |
| Fastener Length | 2.500 INCHES NOMINAL IN |
| Thread Length | 0.875 INCHES MINIMUM IN |
| Material Document and Classification | QQ-N-281,CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 70000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 18 |
| Material | NICKEL ALLOY 400 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 | X |
| Part Number | Manufacturer |
|---|---|
| 5579455-ITEM 9 | Naval Sea Systems Command (USA) |
| 5/16-18 UNC-2A X 2-1/2 PRIMARY | J & S Precision Products Co (inc) (USA) |
| Reference | Meaning |
|---|---|
| 49951-02-01R01 ITEM 9 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-00-282-9607 is a Screw,cap,hexagon Head, manufactured by J & S Precision Products Co (inc), classified under FSC 5305, Screws. Status: active.
NSN 5305-00-282-9607 has 2 manufacturer part numbers on file: 5579455-ITEM 9 (Naval Sea Systems Command), 5/16-18 UNC-2A X 2-1/2 (J & S Precision Products Co (inc)).
Key specifications for 5/16-18 UNC-2A X 2-1/2: Head Height: 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN; Fastener Length: 2.500 INCHES NOMINAL IN; Thread Length: 0.875 INCHES MINIMUM IN; Material Document and Classification: QQ-N-281,CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 13 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.