The Bolt,shoulder, cataloged under National Stock Number 5306-01-280-5673, 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 24 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-280-5673 |
| Primary Part Number | AIC4356N5D2186 |
| 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 | 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN |
| Fastener Length | 2.561 INCHES NOMINAL IN |
| Shoulder Length | 2.186 INCHES NOMINAL FIRST SHOULDER IN |
| Surface Treatment Document and Classification | NAS 672 ASSN STD 1ST TREATMENT RESPONSE OR AMS 2416 ASSN STD 2ND TREATMENT RESPONSE HEAD |
| Surface Treatment Document and Classification | NAS 672 ASSN STD 1ST TREATMENT RESPONSE OR AMS 2416 ASSN STD 2ND TREATMENT RESPONSE THREADS |
| Shoulder Diameter | 0.3119 INCHES MINIMUM AND 0.3130 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.375 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 6485 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | DRY FILM LUBRICANT |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OR CADMIUM AND NICKEL THREADS |
| Surface Treatment | CADMIUM OR NICKEL AND CADMIUM HEAD |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP H11 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 2.401 INCHES NOMINAL 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 |
|---|---|
| AIC4356N5D2186 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| SII 1058N5D2186 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| VCB0008A52186 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| PBF4356N5D2186 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 71657CD-5-2186 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| C4356N5D2186 | 7/2 Vendor item drawing reference U.S. Government activity |
| 5306PL1498858 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| VS2986N5D2186 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-280-5673 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 5306-01-280-5673 has 5 manufacturer part numbers on file: AIC4356N5D2186 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), SII 1058N5D2186 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), VCB0008A52186 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), PBF4356N5D2186 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 71657CD-5-2186 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for AIC4356N5D2186: Head Height: 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN; Fastener Length: 2.561 INCHES NOMINAL IN; Shoulder Length: 2.186 INCHES NOMINAL FIRST SHOULDER IN; Surface Treatment Document and Classification: NAS 672 ASSN STD 1ST TREATMENT RESPONSE OR AMS 2416 ASSN STD 2ND TREATMENT RESPONSE HEAD. 24 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.