The Bolt,shoulder, cataloged under National Stock Number 5306-01-276-1604, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 7 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-276-1604 |
| Primary Part Number | AIC4356N3D1240 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Head Height | 0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN |
| Fastener Length | 1.553 INCHES MINIMUM AND 1.573 INCHES MAXIMUM IN |
| Shoulder Length | 1.230 INCHES MINIMUM AND 1.250 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | NAS672 ASSN STD 1ST TREATMENT RESPONSE OR AMS2416 ASSN STD 2ND TREATMENT RESPONSE HEAD |
| Surface Treatment Document and Classification | NAS672 ASSN STD 1ST TREATMENT RESPONSE OR AMS2416 ASSN STD 2ND TREATMENT RESPONSE THREADS |
| Shoulder Diameter | 0.2445 INCHES MINIMUM AND 0.2460 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.313 INCHES MINIMUM AND 0.333 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS6485 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.367 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OR NICKEL AND CADMIUM HEAD |
| Surface Treatment | CADMIUM AND CHROMATE OR NICKEL AND CADMIUM THREADS |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP H11 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.415 INCHES MINIMUM AND 1.435 INCHES MAXIMUM FIRST HOLE 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 |
|---|---|
| C4356N3D1240 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| AIC4356N3D1240 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| PBF4356N3D1240 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 71657CD-3-1240 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| VCB0008A3-1240 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BM4356N3D-1240 | Huck International, Inc (USA) |
| SII1058CR3-1240 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| Reference | Meaning |
|---|---|
| VS2986CR3-1240 | 5/2 Secondary reference U.S. Government activity |
| C4356N3D1240 | 7/2 Vendor item drawing reference U.S. Government activity |
| 5306PL1498844 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5306-01-276-1604 is a Bolt,shoulder, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-276-1604 has 7 manufacturer part numbers on file: C4356N3D1240 (Sps Technologies, Llc Dba PB Fasteners), AIC4356N3D1240 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), PBF4356N3D1240 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 71657CD-3-1240 (Sps Technologies, Llc Dba PB Fasteners), VCB0008A3-1240 (Valley-Todeco, Inc. Dba Arconic Fastening Systems) and 2 more.
Key specifications for AIC4356N3D1240: Head Height: 0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN; Fastener Length: 1.553 INCHES MINIMUM AND 1.573 INCHES MAXIMUM IN; Shoulder Length: 1.230 INCHES MINIMUM AND 1.250 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: NAS672 ASSN STD 1ST TREATMENT RESPONSE OR AMS2416 ASSN STD 2ND TREATMENT RESPONSE HEAD. 23 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.