The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-272-1744, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Carrier Corp. Government technical data includes 15 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 | 5306-00-272-1744 |
| Primary Part Number | 5F20-1041 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Carrier Corp |
| Status | ACTIVE |
| Head Height | 0.188 INCHES NOMINAL IN |
| Fastener Length | 2.000 INCHES NOMINAL IN |
| Distance From Centerline to Flat | 0.182 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN |
| Thread Length | 0.562 INCHES MINIMUM IN |
| Hardness Rating | 297.0 BRINELL STANDARD MINIMUM AND 352.0 BRINELL STANDARD MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | DEE CHAMFER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.812 INCHES NOMINAL IN |
| Grip Diameter | 0.3125 INCHES MINIMUM AND 0.3130 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 4032 OR STEEL COMP 4037 OR STEEL COMP 8637 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.531 INCHES NOMINAL 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 |
|---|---|
| 5F20-1041 PRIMARY | Carrier Corp (USA) |
NSN 5306-00-272-1744 is a Bolt,close Tolerance, manufactured by Carrier Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-272-1744 has 1 manufacturer part number on file: 5F20-1041 (Carrier Corp).
Key specifications for 5F20-1041: Head Height: 0.188 INCHES NOMINAL IN; Fastener Length: 2.000 INCHES NOMINAL IN; Distance From Centerline to Flat: 0.182 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN; Thread Length: 0.562 INCHES MINIMUM IN. 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.