The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-515-9908, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fm Af, Llc Dba American Fan Company. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-515-9908 |
| Primary Part Number | AC-331332 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fm Af, Llc Dba American Fan Company |
| Status | ACTIVE |
| Hole Thread Quantity Per Inch | 20 |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Nut Style | HEXAGON |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| AC-331317 | Fm Af, Llc Dba American Fan Company (USA) |
| AC-331332 PRIMARY | Fm Af, Llc Dba American Fan Company (USA) |
| Reference | Meaning |
|---|---|
| AC-331317 | 5/9 Secondary reference Tlt-Babcock, Inc. |
| AC-331332 | 3/9 Design control — primary reference Tlt-Babcock, Inc. |
NSN 5310-01-515-9908 is a Nut,self-Locking,hexagon, manufactured by Fm Af, Llc Dba American Fan Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-515-9908 has 2 manufacturer part numbers on file: AC-331317 (Fm Af, Llc Dba American Fan Company), AC-331332 (Fm Af, Llc Dba American Fan Company).
Key specifications for AC-331332: Hole Thread Quantity Per Inch: 20; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.250 INCHES IN; Special Features: STAINLESS STEEL-1/4-20 FULL HTSLN-SPS/50FAF420;HEXAGON.TEMPERED,SLIT,STAINLESS STEEL,LOCK-NUT. 5 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.