The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-336-6306, 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 Div PB Fasteners. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-336-6306 |
| Primary Part Number | PBF4356CR7-1450 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| Status | ACTIVE |
| Head Height | 0.194 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN |
| Fastener Length | 1.870 INCHES MINIMUM AND 1.890 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | NAS 672 NATIONAL SPEC SINGLE TREATMENT RESPONSE HEAD |
| Surface Treatment Document and Classification | NAS 672 NATIONAL SPEC SINGLE TREATMENT RESPONSE THREADS |
| Thread Length | 0.3750 INCHES NOMINAL IN |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.436 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.3750 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.553 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 1.450 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | CADMIUM THREADS |
| Surface Treatment | CADMIUM HEAD |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP H11 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 |
|---|---|
| PBF4356CR7-1450 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| VCB0051C7-1-450 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| AIC4356CR7-1450 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| SII 1058CR7-1450 PRIMARY | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| Reference | Meaning |
|---|---|
| 5306-001CR7-1450 | 5/9 Secondary reference Aidc/aerospace Industrial Development Corp. Dba Aidc |
| VS2986CR7-1450 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-336-6306 is a Bolt,externally Relieved Body, manufactured by Sps Technologies Llc Dba PB Fasteners Div PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-336-6306 has 4 manufacturer part numbers on file: PBF4356CR7-1450 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), VCB0051C7-1-450 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), AIC4356CR7-1450 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), SII 1058CR7-1450 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries).
Key specifications for PBF4356CR7-1450: Head Height: 0.194 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN; Fastener Length: 1.870 INCHES MINIMUM AND 1.890 INCHES MAXIMUM IN; Surface Treatment Document and Classification: NAS 672 NATIONAL SPEC SINGLE TREATMENT RESPONSE HEAD; Surface Treatment Document and Classification: NAS 672 NATIONAL SPEC SINGLE TREATMENT RESPONSE THREADS. 21 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.