The Bolt,machine, cataloged under National Stock Number 5306-01-262-6313, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-262-6313 |
| Primary Part Number | 570520 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Head Height | 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN |
| Fastener Length | 1.570 INCHES MINIMUM AND 1.590 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.630 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5625 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | TEE NO. 6 |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.920 INCHES MINIMUM AND 0.980 INCHES MAXIMUM IN |
| Head Length | 0.275 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN |
| Width Between Flats | 0.215 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Chamfer Angle | 40.0 DEGREES MINIMUM AND 50.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 570520 | M.s. Aerospace Inc. Dba Ms Aerospace Inc (USA) |
| 570520 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 570520 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 570520 | 5/9 Secondary reference Accurate Threaded Products Company the |
| 570520 | 5/9 Secondary reference American Standard Company Dba Florian Tools |
| 570520 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-262-6313 is a Bolt,machine, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-262-6313 has 3 manufacturer part numbers on file: 570520 (M.s. Aerospace Inc. Dba Ms Aerospace Inc), 570520 (Sps Technologies, Llc Dba PB Fasteners), 570520 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 570520: Surface Finish: 32.0 MICROINCHES THREADS; Head Height: 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN; Fastener Length: 1.570 INCHES MINIMUM AND 1.590 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL. 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.
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.