The Bolt,shear, cataloged under National Stock Number 5306-01-256-5185, 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 22 specifications, cited from the U.S. Government catalog. The record lists 17 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-256-5185 |
| Primary Part Number | AIC752-4H8 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Extended Washer Thickness | 0.059 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN |
| Head Height | 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| Fastener Length | 0.953 INCHES MINIMUM AND 0.983 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Thread Length | 0.443 INCHES MINIMUM AND 0.493 INCHES MAXIMUM IN |
| Hole Configuration Style | DOUBLE HEXAGON LONGITUDINAL HOLE |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Width Between Flats | 0.303 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN |
| Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP XM-13 OVERALL |
| Hole Quantity | 4 |
| Thread Series Designator | UNF |
| Hole Type | DRILLED |
| Hole Diameter | 0.032 INCHES MINIMUM AND 0.042 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 |
|---|---|
| SLB253-4H8 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| VS3060-4H8 | Howmet Global Fastening Systems Inc (USA) |
| ST3M571-4H8 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 11831-4H8 | Reid Products Inc. Dba Reid Products Inc (USA) |
| 74328-4H8 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| GS1030-4H8 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| BM3326-4H8 | Huck International, Inc (USA) |
| MB84-4H8 | Hi-Shear Corporation (USA) |
| ST3M571-4H8 | Saturn Fasteners Inc (USA) |
| HP7571-4H8 | Heartland Precision Fasteners Inc (USA) |
| ST3M571-4H8 | Houston Precision Fasteners I Lp (USA) |
| MB84-4H8 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M571-4H8 | The Boeing Company Div Defense (USA) |
| AIC752-4H8 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| VAL23033-4H8 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| S11-1059-4H8 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| S371-4H8 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| 74328-4H8 | 5/2 Secondary reference U.S. Government activity |
| ST3M571-4H48 | 5/9 Secondary reference Fastener Innovation Technology, Inc. Dba F I T |
| BM3326-4H8 | 5/9 Secondary reference U.S. Government activity |
| S371-4H8 | 5/9 Secondary reference U.S. Government activity |
| ST3M571-4H48 | 5/9 Secondary reference Sps Technologies Inc |
| VS3060-4H8 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-256-5185 is a Bolt,shear, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-256-5185 has 17 manufacturer part numbers on file: SLB253-4H8 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), VS3060-4H8 (Howmet Global Fastening Systems Inc), ST3M571-4H8 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 11831-4H8 (Reid Products Inc. Dba Reid Products Inc), 74328-4H8 (Sps Technologies, Llc Dba PB Fasteners) and 12 more.
Key specifications for AIC752-4H8: Extended Washer Thickness: 0.059 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN; Head Height: 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN; Fastener Length: 0.953 INCHES MINIMUM AND 0.983 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 22 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.