The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-01-558-9277, 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 13 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 | 5306-01-558-9277 |
| Primary Part Number | 71844-2 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Extended Washer Thickness | 0.100 INCHES NOMINAL IN |
| Head Height | 0.665 INCHES MINIMUM AND 0.695 INCHES MAXIMUM IN |
| Extended Washer Diameter | 2.230 INCHES NOMINAL IN |
| Style Designator | CONCENTRIC HOLE UNTHREADED |
| Nominal Thread Diameter | 1.630 INCHES IN |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.490 INCHES NOMINAL IN |
| Shoulder Diameter | 1.750 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 12 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| 71844-2 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
NSN 5306-01-558-9277 is a Bolt,internally Relieved Body, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-558-9277 has 1 manufacturer part number on file: 71844-2 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for 71844-2: Extended Washer Thickness: 0.100 INCHES NOMINAL IN; Head Height: 0.665 INCHES MINIMUM AND 0.695 INCHES MAXIMUM IN; Extended Washer Diameter: 2.230 INCHES NOMINAL IN; Style Designator: CONCENTRIC HOLE UNTHREADED. 13 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.