The Setscrew, cataloged under National Stock Number 5305-01-308-3831, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners. Government technical data includes 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-308-3831 |
| Primary Part Number | 6242853 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners |
| Status | ACTIVE |
| Head Height | 0.178 INCHES MINIMUM AND 0.196 INCHES MAXIMUM IN |
| Fastener Length | 0.938 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | 725 SYSTEM,CAGE 58913 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.863 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | SQUARE |
| Thread Direction | RIGHT-HAND |
| Point Style | OVAL |
| Width Between Flats | 0.241 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Surface Treatment | CERAMIC OVERALL |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 302B OR STEEL COMP 303 OR STEEL COMP 303CU OR STEEL COMP 303 PLUS X OR STEEL UNS S34723 OR STEEL COMP 303F OR STEEL UNS S34720 OR STEEL COMP 303MA OR STEEL COMP 303PB OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 308 OR STEEL COMP 309 OR STEEL COMP 309S OR STEEL COMP 310 OR STEEL COMP 310S OR STEEL COMP 51B60 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 322 OR STEEL COMP 323 OR STEEL COMP 324 OR STEEL COMP 347 OR STEEL COMP 348 OR STEEL COMP 384 OR STEEL COMP 385 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 |
|---|---|
| 6242853 | All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 6242853 | 3/9 Design control — primary reference Allmetal Screw Products Corp |
| 6242853 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
| 6242853 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-308-3831 is a Setscrew, manufactured by All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-308-3831 has 1 manufacturer part number on file: 6242853 (All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners).
Key specifications for 6242853: Head Height: 0.178 INCHES MINIMUM AND 0.196 INCHES MAXIMUM IN; Fastener Length: 0.938 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN; Surface Treatment Document and Classification: 725 SYSTEM,CAGE 58913 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.863 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN. 15 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.