The Bolt,machine, cataloged under National Stock Number 5306-01-671-5631, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Portland Bolt & Manufacturing Co Inc. Government technical data includes 10 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 | 5306-01-671-5631 |
| Primary Part Number | HEX BOLT 1-1/2-6X4 HDG |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Portland Bolt & Manufacturing Co Inc |
| Status | ACTIVE |
| Head Height | 1.00 INCHES NOMINAL IN |
| Fastener Length | 4.0 INCHES NOMINAL IN |
| Thread Length | 3.0 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A307 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 1.5000 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Material | STEEL OVERALL |
| Hole Quantity | 1 |
| Head Diameter | 2.2500 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 |
|---|---|
| HEX BOLT 1-1/2-6X4 HDG PRIMARY | Portland Bolt & Manufacturing Co Inc (USA) |
NSN 5306-01-671-5631 is a Bolt,machine, manufactured by Portland Bolt & Manufacturing Co Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-671-5631 has 1 manufacturer part number on file: HEX BOLT 1-1/2-6X4 HDG (Portland Bolt & Manufacturing Co Inc).
Key specifications for HEX BOLT 1-1/2-6X4 HDG: Head Height: 1.00 INCHES NOMINAL IN; Fastener Length: 4.0 INCHES NOMINAL IN; Thread Length: 3.0 INCHES NOMINAL IN; Material Document and Classification: ASTM A307 ASSN STD ALL MATERIAL RESPONSES OVERALL. 10 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.