The Nut,plain,spline, cataloged under National Stock Number 5310-00-253-8259, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Barco Engineering Co Inc. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-253-8259 |
| Primary Part Number | BEC600070P4 |
| Item Name | Nut,plain,spline |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Barco Engineering Co Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-F-14072,E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Material Document and Classification | ASTM A582 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.138 INCHES IN |
| Nut Diameter | 0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN |
| Pilot Diameter | 0.196 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN |
| Pilot Length | 0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN |
| Nut Height | 0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Countersink Angle | 45.0 DEGREES NOMINAL NUT |
| Nut Style | SPLINE |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 303 OR STEEL COMP 302 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 |
|---|---|
| BEC600070P4 | Barco Engineering Co Inc (USA) |
| 6251ASS0632-7 | Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware (USA) |
| Reference | Meaning |
|---|---|
| 600070P4 | 3/2 Design control — primary reference U.S. Government activity |
| 6251A-SS-0632-7 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-00-253-8259 is a Nut,plain,spline, manufactured by Barco Engineering Co Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-253-8259 has 2 manufacturer part numbers on file: BEC600070P4 (Barco Engineering Co Inc), 6251ASS0632-7 (Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware).
Key specifications for BEC600070P4: Surface Treatment Document and Classification: MIL-F-14072,E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL COARSE (UNC); Material Document and Classification: ASTM A582 ASSN STD ALL MATERIAL RESPONSES OVERALL; Thread Direction: RIGHT-HAND. 15 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.