The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-017-9840, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5305-00-017-9840 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.234 INCHES NOMINAL IN |
| Fastener Length | 1.125 INCHES NOMINAL IN |
| Thread Length | 1.000 INCHES MINIMUM IN |
| Hardness Rating | 23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.562 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | 2 TYPE AND 10P STYLE AND 5 GRADE |
| Minimum Yield Strength | 85000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL 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 |
| Reference | Meaning |
|---|---|
| FFS85TYPE2STYLE10P | 4/1 Identification reference U.S. Government activity |
| 179840 | 5/1 Secondary reference General Motors Corp |
| 14X3232 | 5/1 Secondary reference U.S. Government activity |
| X3295 | 5/9 Secondary reference Teledyne Continental Motors Industrial Products Div Teledyne Industries Inc Sub of Teledyne Inc |
| 4674 | 5/1 Secondary reference Fwd Seagrave Holdings Lp |
| 14058A | 5/9 Secondary reference Hercules Engine Co Inc |
| X3295 | 5/9 Secondary reference Kaitlin Corp |
| 375601 | 5/9 Secondary reference White Motor Corp |
| MS35295-61 | 2/2 Government specification standardization U.S. Government activity |
| 14058A | 5/1 Secondary reference Brinkley Technology Group Llc Dba Hercules Manufacturing |
NSN 5305-00-017-9840 is a Screw,cap,hexagon Head, classified under FSC 5305, Screws. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 2010-00-213-0520, 5998-00-857-4547, 7025-01-264-9730. Verify interchangeability with system specifications before substitution.
Key specifications for 5305-00-017-9840: Head Height: 0.234 INCHES NOMINAL IN; Fastener Length: 1.125 INCHES NOMINAL IN; Thread Length: 1.000 INCHES MINIMUM IN; Hardness Rating: 23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL. 14 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.