The Nut,plain,spline, cataloged under National Stock Number 5310-01-180-8989, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware. Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-180-8989 |
| Primary Part Number | 6250B-SS-0440-6B |
| Item Name | Nut,plain,spline |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-C-13924,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Material Document and Classification | ASTM A581 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Nut Counterbore Depth | 0.167 INCHES MINIMUM AND 0.177 INCHES MAXIMUM BOSS IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.112 INCHES IN |
| Nut Diameter | 0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN |
| Counterbore Diameter | 0.140 INCHES NOMINAL BOSS IN |
| Pilot Diameter | 0.196 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN |
| Pilot Length | 0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN |
| Nut Height | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Surface Treatment | OXIDE OVERALL |
| Nut Style | SPLINE |
| Thread Class | 2B |
| Thread Quantity Per Inch | 40 |
| Material | STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 416 OR STEEL COMP 416SE OR STEEL COMP 430F OR STEEL COMP 430FSE 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 |
|---|---|
| 6250B-SS-0440-6B PRIMARY | Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware (USA) |
| Reference | Meaning |
|---|---|
| 6250B-SS-0440-6B | 5/9 Secondary reference New Haven Mfg Corp Amatom Electronic Hardware Div |
| 7108192-001 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5310-01-180-8989 is a Nut,plain,spline, manufactured by Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-180-8989 has 1 manufacturer part number on file: 6250B-SS-0440-6B (Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware).
Key specifications for 6250B-SS-0440-6B: Surface Treatment Document and Classification: MIL-C-13924,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL COARSE (UNC); Material Document and Classification: ASTM A581 ASSN STD ALL MATERIAL RESPONSES OVERALL; Nut Counterbore Depth: 0.167 INCHES MINIMUM AND 0.177 INCHES MAXIMUM BOSS IN. 16 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.