The Nut,plain,castellated,hexagon, cataloged under National Stock Number 5310-00-308-7624, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Dresser, Llc. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-308-7624 |
| Primary Part Number | 177300A |
| Item Name | Nut,plain,castellated,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Dresser, Llc |
| Status | ACTIVE |
| Width Across Flats | 0.616 INCHES NOMINAL IN |
| Thread Series | UNF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.500 INCHES IN |
| Nut Height | 0.449 INCHES NOMINAL IN |
| Nut Style | CASTELLATED, HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 20 |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 177300A PRIMARY | Dresser, Llc (USA) |
| Reference | Meaning |
|---|---|
| 85736 | 5/9 Secondary reference Dresser Industries Inc Waukesha Engine Div |
NSN 5310-00-308-7624 is a Nut,plain,castellated,hexagon, manufactured by Dresser, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-308-7624 has 1 manufacturer part number on file: 177300A (Dresser, Llc).
1 possible match (shared part number, not a government interchangeability claim): 6515-01-701-2664. Verify interchangeability with system specifications before substitution.
Key specifications for 177300A: Width Across Flats: 0.616 INCHES NOMINAL IN; Thread Series: UNF; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.500 INCHES IN. 9 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.