The Bolt,internal Wrenching, cataloged under National Stock Number 5306-01-033-8599, 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 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-033-8599 |
| Primary Part Number | 50400 A18 |
| Item Name | Bolt,internal Wrenching |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Width Across Flats | 0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN |
| Head Height | 0.160 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN |
| Fastener Length | 2.907 INCHES MINIMUM AND 3.000 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | 965398,FSCM 82577 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.907 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Material Document and Classification | 965398,FSCM 82577 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | BEVEL-CONICAL |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.305 INCHES MINIMUM AND 0.312 INCHES MAXIMUM 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 |
|---|---|
| 50400 A18 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| A0L4164-168 PRIMARY | All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners (USA) |
| Reference | Meaning |
|---|---|
| VS1178-48 | 3/2 Design control — primary reference U.S. Government activity |
| SH200-0832-48P | 3/2 Design control — primary reference U.S. Government activity |
| 965398-168 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5306-01-033-8599 is a Bolt,internal Wrenching, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-033-8599 has 2 manufacturer part numbers on file: 50400 A18 (Sps Technologies, Llc Dba PB Fasteners), A0L4164-168 (All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners).
Key specifications for 50400 A18: Width Across Flats: 0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN; Head Height: 0.160 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN; Fastener Length: 2.907 INCHES MINIMUM AND 3.000 INCHES MAXIMUM IN; Surface Treatment Document and Classification: 965398,FSCM 82577 MFR REF SINGLE TREATMENT RESPONSE OVERALL. 16 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.