The Bolt,square Neck, cataloged under National Stock Number 5306-01-538-6791, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-538-6791 |
| Primary Part Number | 92356A546 |
| Item Name | Bolt,square Neck |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Neck Length | 0.156 INCHES MINIMUM IN |
| Head Height | 0.145 INCHES MINIMUM IN |
| Fastener Length | 1.645 INCHES MINIMUM IN |
| Thread Length | 1.500 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | ROUND |
| Thread Direction | RIGHT-HAND |
| Neck Width | 0.260 INCHES MINIMUM IN |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 302 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.594 INCHES MINIMUM 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 |
|---|---|
| 92356A546 | Mcmaster-Carr Supply Co (USA) |
| Reference | Meaning |
|---|---|
| 1-CB-25C-150 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-538-6791 is a Bolt,square Neck, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-538-6791 has 1 manufacturer part number on file: 92356A546 (Mcmaster-Carr Supply Co).
Key specifications for 92356A546: Neck Length: 0.156 INCHES MINIMUM IN; Head Height: 0.145 INCHES MINIMUM IN; Fastener Length: 1.645 INCHES MINIMUM IN; Thread Length: 1.500 INCHES MINIMUM IN. 12 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.