The Screw,tapping, cataloged under National Stock Number 5305-01-239-3355, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-239-3355 |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 0.312 INCHES IN |
| Extended Washer Thickness | 0.035 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN |
| Head Height | 0.208 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN |
| Fastener Length | 1.000 INCHES NOMINAL IN |
| Extended Washer Diameter | 0.875 INCHES NOMINAL IN |
| Nonmachine Thread Style | GIMLET POINT (TYPE A, AB OR BA) |
| Head Style | HEXAGON EXTENDED WASHER |
| Width Between Flats | 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 700-304 | 3/9 Design control — primary reference Dorman Products, Inc. Dba Dorman |
NSN 5305-01-239-3355 is a Screw,tapping, classified under FSC 5305, Screws. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 6750-01-427-6152, 5310-01-483-3814, 3110-01-525-4403. Verify interchangeability with system specifications before substitution.
Key specifications for 5305-01-239-3355: Nonmachine Nominal Thread Diameter: 0.312 INCHES IN; Extended Washer Thickness: 0.035 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN; Head Height: 0.208 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN; Fastener Length: 1.000 INCHES NOMINAL IN. 10 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.