The Nut,plain,castellated,hexagon, cataloged under National Stock Number 5310-00-021-8597, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Renk America Llc Div Renk America. Government technical data includes 12 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-021-8597 |
| Primary Part Number | 500332 |
| Item Name | Nut,plain,castellated,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Renk America Llc Div Renk America |
| Status | ACTIVE |
| Width Across Flats | 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN |
| Thread Series | UNF |
| Material Document and Classification | QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Nondefinitive Spec/std Data | A TYPE |
| Nut Height | 0.398 INCHES MINIMUM AND 0.415 INCHES MAXIMUM IN |
| Nut Style | CASTELLATED, HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL |
| Bearing Surface Type | CHAMFERED OR WASHER FACED |
| 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 |
|---|---|
| 500332 PRIMARY | Renk America Llc Div Renk America (USA) |
| Reference | Meaning |
|---|---|
| 218597 | 5/9 Secondary reference General Motors Corp |
| 218597 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| FFB571TYPEA | 4/1 Identification reference U.S. Government activity |
NSN 5310-00-021-8597 is a Nut,plain,castellated,hexagon, manufactured by Renk America Llc Div Renk America, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-021-8597 has 1 manufacturer part number on file: 500332 (Renk America Llc Div Renk America).
3 possible matches (shared part number, not a government interchangeability claim): 2915-00-305-4775, 2930-00-774-4080, 3040-01-221-5393. Verify interchangeability with system specifications before substitution.
Key specifications for 500332: Width Across Flats: 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN; Thread Series: UNF; Material Document and Classification: QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Thread Direction: RIGHT-HAND. 12 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.