The Nut,plain,knurled, cataloged under National Stock Number 5310-00-393-6685, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5310-00-393-6685 |
| Primary Part Number | 7723309 |
| Item Name | Nut,plain,knurled |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | CANCELLED |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNEF |
| Material Document and Classification | QQ-A-225/5,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nut Counterbore Depth | 0.385 INCHES NOMINAL NUT IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.625 INCHES IN |
| Nut Diameter | 1.764 INCHES MINIMUM AND 1.773 INCHES MAXIMUM IN |
| Counterbore Diameter | 1.276 INCHES MINIMUM AND 1.286 INCHES MAXIMUM NUT IN |
| Counterbore Diameter | 1.276 INCHES MINIMUM AND 1.286 INCHES MAXIMUM OVERALL IN |
| Nut Thickness | 1.000 INCHES NOMINAL IN |
| Small End Diameter | 1.406 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Countersink Angle | 90.0 DEGREES NOMINAL NUT |
| Nut Style | KNURLED |
| Thread Class | 2B |
| Thread Quantity Per Inch | 18 |
| Material | ALUMINUM ALLOY 2017 OVERALL |
| Knurl Width | 0.526 INCHES MINIMUM AND 0.536 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 64857BX | Oshkosh Defense Llc (USA) |
| 7723309 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 10511370 | General Dynamics Land Systems Canadacorp (CAN) |
| 60-37005-281 | Amphenol Corp Div Amphenol Aerospace Operations (USA) |
| Reference | Meaning |
|---|---|
| 7723309 | 5/9 Secondary reference Eidal International Corporation |
| 7723309 | 5/2 Secondary reference U.S. Government activity |
| 64857BX | 5/9 Secondary reference Oshkosh Corp |
| 67A219C46-1 | C/1 Advisory reference — outside the item-of-supply concept Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| 5310003936685 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 7723309 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-00-393-6685 is a Nut,plain,knurled, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: cancelled.
NSN 5310-00-393-6685 has 4 manufacturer part numbers on file: 64857BX (Oshkosh Defense Llc), 7723309 (U S Army Tank Automotive Command Amsta-Im-Mm), 10511370 (General Dynamics Land Systems Canadacorp), 60-37005-281 (Amphenol Corp Div Amphenol Aerospace Operations).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-248-3077. Verify interchangeability with system specifications before substitution.
Key specifications for 7723309: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNEF; Material Document and Classification: QQ-A-225/5,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Nut Counterbore Depth: 0.385 INCHES NOMINAL NUT IN. 18 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.
NSN 5310-00-393-6685 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.