The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-135-4144, 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 16 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-135-4144 |
| Primary Part Number | AIC687-4-5 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Head Height | 0.154 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN |
| Fastener Length | 0.618 INCHES MINIMUM AND 0.638 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.296 INCHES MINIMUM AND 0.336 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.448 INCHES MINIMUM AND 0.455 INCHES MAXIMUM IN |
| Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| 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 | X |
| Part Number | Manufacturer |
|---|---|
| AIC687-4-5 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M744-4-5 | The Boeing Company Div Defense (USA) |
| MB154-4-5 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| PBF1265-4-5 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| VCG0001-4-5 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| MB154-4-5 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| ST3M744-4-5 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| 122895-4-5 | 3/2 Design control — primary reference U.S. Government activity |
| ST3M744-4-5 | 5/9 Secondary reference U.S. Government activity |
| VS3174-4-5 | 5/9 Secondary reference U.S. Government activity |
| VS3174-4-5 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| S406-4-5 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| S406-4-5 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-135-4144 is a Bolt,close Tolerance, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-135-4144 has 6 manufacturer part numbers on file: AIC687-4-5 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), ST3M744-4-5 (The Boeing Company Div Defense), MB154-4-5 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), PBF1265-4-5 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), VCG0001-4-5 (Valley-Todeco, Inc. Dba Arconic Fastening Systems) and 1 more.
Key specifications for AIC687-4-5: Head Height: 0.154 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN; Fastener Length: 0.618 INCHES MINIMUM AND 0.638 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.296 INCHES MINIMUM AND 0.336 INCHES MAXIMUM IN. 16 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.