The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-00-458-8608, 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 25 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-458-8608 |
| Primary Part Number | 71843-1 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Extended Washer Thickness | 0.120 INCHES NOMINAL IN |
| Head Height | 0.795 INCHES MINIMUM AND 0.825 INCHES MAXIMUM IN |
| Fastener Length | 4.470 INCHES MINIMUM AND 4.500 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | DS30000 C-2-3 FSCM 56878 MFR REF SINGLE TREATMENT RESPONSE GRIP |
| Surface Treatment Document and Classification | DS30000 C-2-3 FSCM 56878 MFR REF SINGLE TREATMENT RESPONSE HEAD |
| Surface Treatment Document and Classification | DS30000 C-2-3 FSCM 56878 MFR REF SINGLE TREATMENT RESPONSE THREADS |
| Extended Washer Diameter | 2.470 INCHES MINIMUM AND 2.510 INCHES MAXIMUM IN |
| Thread Length | 0.955 INCHES MINIMUM AND 1.035 INCHES MAXIMUM IN |
| Style Designator | CONCENTRIC HOLE UNTHREADED |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 1.750 INCHES IN |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.481 INCHES MINIMUM AND 1.502 INCHES MAXIMUM IN |
| Shoulder Diameter | 2.001 INCHES NOMINAL IN |
| Concentric Hole Diameter | 1.040 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM THREADS |
| Surface Treatment | CHROMIUM GRIP |
| Surface Treatment | CADMIUM HEAD |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP E4340 OVERALL |
| Shoulder Length | 3.215 INCHES MINIMUM AND 3.235 INCHES MAXIMUM IN |
| Thread Series Designator | UN |
| 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 |
|---|---|
| 71843-1 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
NSN 5306-00-458-8608 is a Bolt,internally Relieved Body, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-458-8608 has 1 manufacturer part number on file: 71843-1 (Sps Technologies, Llc Dba PB Fasteners).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-558-2764. Verify interchangeability with system specifications before substitution.
Key specifications for 71843-1: Extended Washer Thickness: 0.120 INCHES NOMINAL IN; Head Height: 0.795 INCHES MINIMUM AND 0.825 INCHES MAXIMUM IN; Fastener Length: 4.470 INCHES MINIMUM AND 4.500 INCHES MAXIMUM IN; Surface Treatment Document and Classification: DS30000 C-2-3 FSCM 56878 MFR REF SINGLE TREATMENT RESPONSE GRIP. 25 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.