The Bolt,shear, cataloged under National Stock Number 5306-01-678-6190, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The American Society of Mechanical Engineers. Government technical data includes 18 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-678-6190 |
| Primary Part Number | AES20C375B50BB3M31 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | ACTIVE |
| Head Height | 0.268 INCHES NOMINAL IN |
| Fastener Length | 2.500 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | ASTM F2833, GRADE 4 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.375 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A574 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.3125 INCHES IN |
| Head Style | FLAT FILLISTER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.000 INCHES NOMINAL IN |
| Width Between Flats | 0.544 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN |
| Grip Diameter | 0.209 INCHES MINIMUM AND 0.212 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM AND ZINC OVERALL |
| Minimum Tensile Strength | 16000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.543 INCHES MINIMUM AND 0.562 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 |
|---|---|
| AES20C375B50BB3M31 PRIMARY | The American Society of Mechanical Engineers (USA) |
NSN 5306-01-678-6190 is a Bolt,shear, manufactured by The American Society of Mechanical Engineers, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-678-6190 has 1 manufacturer part number on file: AES20C375B50BB3M31 (The American Society of Mechanical Engineers).
Key specifications for AES20C375B50BB3M31: Head Height: 0.268 INCHES NOMINAL IN; Fastener Length: 2.500 INCHES NOMINAL IN; Surface Treatment Document and Classification: ASTM F2833, GRADE 4 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.375 INCHES NOMINAL 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.