The Bolt,machine, cataloged under National Stock Number 5306-00-535-1283, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-00-535-1283 |
| Primary Part Number | 50-047-6-26 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Special Test Features | MATERIAL FOR BOLT: 4340 STEEL PER AMS6415 OR 4140 STEEL PER AMS6382 OR 8740 STEEL PER AMS6322, A286 CRES PER CHEMISTRY OF AMS5731, HEAT TREATMENT: ALLOY STEEL 160-180KSI, CRES: 160-180KSI,FINISH OF BOLT: STEEL, CADMIUM PLATE PER AMS-QQ-P-416,TYPE II,CLASS 2, CRES: PASSIVATE PER AMS2700 METHOD 1,CLASS 4 OR PASSIVATE PER AMS2700 METHOD 1, CLASS 4, CADMIUM PLATE ALL SURFACES EXCEPT THREADED END PER AMS-QQ-P-416,TYPE II,CLASS 2,RETAINING ELEMENT: PASSIVATE PER AMS2700,METHOD 1, CLASS 4 |
| Criticality Code Justification | FEAT |
| Nominal Thread Diameter | 0.3750 INCHES IN |
| Head Style | HEXAGON |
| Grip Length | 1.578 INCHES MINIMUM AND 1.672 INCHES MAXIMUM IN |
| Width Between Flats | 0.650 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE FASTENER |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 11540 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 21000 POUNDS PER SQUARE INCH LBS |
| Thread Quantity Per Inch | 24 |
| Material | STEEL CORROSION RESISTING FASTENER |
| Material | STEEL COMP 4340 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.373 INCHES MINIMUM AND 0.374 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 | F |
| Part Number | Manufacturer |
|---|---|
| 50-047-6-26 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 50-047-6-26 | M.s. Aerospace Inc. Dba Ms Aerospace Inc (USA) |
| Reference | Meaning |
|---|---|
| 50-047-6-26 | 3/2 Design control — primary reference U.S. Government activity |
| 50-047-6-26 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5306-00-535-1283 is a Bolt,machine, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-535-1283 has 2 manufacturer part numbers on file: 50-047-6-26 (Sps Technologies, Llc Dba PB Fasteners), 50-047-6-26 (M.s. Aerospace Inc. Dba Ms Aerospace Inc).
Key specifications for 50-047-6-26: Special Test Features: MATERIAL FOR BOLT: 4340 STEEL PER AMS6415 OR 4140 STEEL PER AMS6382 OR 8740 STEEL PER AMS6322, A286 CRES PER CHEMISTRY OF AMS5731, HEAT TREATMENT: ALLOY STEEL 160-180KSI, CRES: 160-180KSI,FINISH OF BOLT: STEEL, CADMIUM PLATE PER AMS-QQ-P-416,TYPE II,CLASS 2, CRES: PASSIVATE PER AMS2700 METHOD 1,CLASS 4 OR PASSIVATE PER AMS2700 METHOD 1, CLASS 4, CADMIUM PLATE ALL SURFACES EXCEPT THREADED END PER AMS-QQ-P-416,TYPE II,CLASS 2,RETAINING ELEMENT: PASSIVATE PER AMS2700,METHOD 1, CLASS 4; Criticality Code Justification: FEAT; Nominal Thread Diameter: 0.3750 INCHES IN; Head Style: HEXAGON. 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.