The Bolt,shear, cataloged under National Stock Number 5306-01-476-9192, 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 20 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-476-9192 |
| Primary Part Number | SLB255-4-5 |
| 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 | 0.036 INCHES NOMINAL IN |
| Head Height | 0.250 INCHES NOMINAL IN |
| Fastener Length | 0.766 INCHES MINIMUM AND 0.796 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.460 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN |
| Thread Length | 0.468 INCHES NOMINAL IN |
| Criticality Code Justification | AGAV |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | SPLINE EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.313 INCHES NOMINAL IN |
| Head Minor Diameter | 0.297 INCHES MINIMUM AND 0.312 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 |
| 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 | Y |
| Part Number | Manufacturer |
|---|---|
| SLB255-4-5 PRIMARY | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| ST3M753-4-5 PRIMARY | The Boeing Company Div Defense (USA) |
| S343-4-5 PRIMARY | Huck International, Inc (USA) |
| VFK600-4-5 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M753-4-5 | Houston Precision Fasteners I Lp (USA) |
| ST3M753-4-5 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| PBF1267-4-5 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| AIC763-4-5 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| MB156-4-5 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| GS1032-4-5 PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 122897-4-5 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| VS3190-4-5 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HP7753-4-5 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| MB156-4-5 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| 122897-4-5 | 5/9 Secondary reference Sps Technologies Inc |
| 122897-4-5 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-476-9192 is a Bolt,shear, manufactured by Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-476-9192 has 14 manufacturer part numbers on file: SLB255-4-5 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), ST3M753-4-5 (The Boeing Company Div Defense), S343-4-5 (Huck International, Inc), VFK600-4-5 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), ST3M753-4-5 (Houston Precision Fasteners I Lp) and 9 more.
Key specifications for SLB255-4-5: Extended Washer Thickness: 0.036 INCHES NOMINAL IN; Head Height: 0.250 INCHES NOMINAL IN; Fastener Length: 0.766 INCHES MINIMUM AND 0.796 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 20 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.