The Bolt,machine, cataloged under National Stock Number 5306-00-983-9237, 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 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-00-983-9237 |
| Primary Part Number | 537913 |
| 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 |
| Surface Finish | 63.0 MICROINCHES GRIP |
| Surface Finish | 63.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Fastener Length | 0.850 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN |
| Thread Length | 0.670 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 7471 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | ROUND W/WRENCH FLATS CHAMFERED |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.180 INCHES MAXIMUM IN |
| Width Between Flats | 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | C8 |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.550 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 537913 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 537913 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 537913 | 5/2 Secondary reference U.S. Government activity |
| 537913 | 5/2 Secondary reference U.S. Government activity |
| 537913 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
NSN 5306-00-983-9237 is a Bolt,machine, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-983-9237 has 2 manufacturer part numbers on file: 537913 (Sps Technologies, Llc Dba PB Fasteners), 537913 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 537913: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 63.0 MICROINCHES GRIP; Surface Finish: 63.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM 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.
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.