The Bolt,shear, cataloged under National Stock Number 5306-01-480-6412, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok. Government technical data includes 24 specifications, cited from the U.S. Government catalog. The record lists 14 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-480-6412 |
| Primary Part Number | SLB255-3H4 |
| Item Name | Bolt,shear |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok |
| Status | ACTIVE |
| Extended Washer Thickness | 0.111 INCHES MINIMUM AND 0.121 INCHES MAXIMUM IN |
| Head Height | 0.250 INCHES NOMINAL IN |
| Fastener Length | 0.624 INCHES MINIMUM AND 0.654 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS-QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.354 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN |
| Thread Length | 0.389 INCHES NOMINAL IN |
| Criticality Code Justification | AGAV |
| Hole Configuration Style | SPLINE |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.3750 INCHES IN |
| Head Style | SPLINE EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.250 INCHES NOMINAL IN |
| Head Minor Diameter | 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP XM-13 OVERALL |
| Hole Quantity | 4 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.070 INCHES MINIMUM AND 0.075 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 | Y |
| Part Number | Manufacturer |
|---|---|
| SLB255-3H4 PRIMARY | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| AIC763-3H4 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| PBF1267-3H4 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| ST3M753-3H4 | Houston Precision Fasteners I Lp (USA) |
| 122897-3H4 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| MB156-3H4 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M753-3H4 PRIMARY | The Boeing Company Div Defense (USA) |
| VS3190-3H4 | Howmet Global Fastening Systems Inc (USA) |
| S343-3H4 | Huck International, Inc (USA) |
| GS1032-3H4 PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| MB156-3H4 PRIMARY | Hi-Shear Corporation (USA) |
| ST3M753-3H4 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| VFK600-3H4 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| HP7753-3H4 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| Reference | Meaning |
|---|---|
| VS3190-3H4 | 5/9 Secondary reference U.S. Government activity |
| 122897-3H4 | 5/2 Secondary reference U.S. Government activity |
| 122897-3H4 | 5/9 Secondary reference Sps Technologies Inc |
| S343-3H4 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-480-6412 is a Bolt,shear, manufactured by Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-480-6412 has 14 manufacturer part numbers on file: SLB255-3H4 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), AIC763-3H4 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), PBF1267-3H4 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), ST3M753-3H4 (Houston Precision Fasteners I Lp), 122897-3H4 (Sps Technologies, Llc Dba PB Fasteners) and 9 more.
Key specifications for SLB255-3H4: Extended Washer Thickness: 0.111 INCHES MINIMUM AND 0.121 INCHES MAXIMUM IN; Head Height: 0.250 INCHES NOMINAL IN; Fastener Length: 0.624 INCHES MINIMUM AND 0.654 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS-QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.