The Stud,turnlock Fastener, cataloged under National Stock Number 5325-00-916-9355, is classified within Federal Supply Class 5325 (Fastening Devices) 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 12 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5325-00-916-9355 |
| Primary Part Number | AIC775-8-9 |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625,TY 1 OR 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Accommodated Thickness | 0.656 INCHES MINIMUM AND 0.719 INCHES MAXIMUM IN |
| Turnlock Stud Shank Style | STUD SHANK |
| Material Document and Classification | QQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6,T851 OR T8511 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 0.525 INCHES MINIMUM AND 0.545 INCHES MAXIMUM IN |
| Stud Head Height | 0.059 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN |
| Turnlock Stud Head Style | FLAT FILLISTER |
| Stud Shank Major Diameter | 0.417 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE OVERALL |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Stud Thread Size and Series/type Designator | 0.250-28 UNIFIED NATIONAL JOINT FINE (UNJF) |
| Grip Length | 0.552 INCHES MINIMUM AND 0.572 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 |
|---|---|
| AIC775-8-9 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| N4-8-9 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| N4-8-9 | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| 2114-25-9 | 5/9 Secondary reference U.S. Government activity |
| C694-8-9 | 5/2 Secondary reference U.S. Government activity |
| 2114-8-9 | 5/9 Secondary reference Howmet Global Fastening Systems Inc. Div Tridair Products |
| 2114-25-9 | 5/9 Secondary reference Howmet Global Fastening Systems Inc. Div Tridair Products |
NSN 5325-00-916-9355 is a Stud,turnlock Fastener, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-916-9355 has 3 manufacturer part numbers on file: AIC775-8-9 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), N4-8-9 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), N4-8-9 (Hi-Shear Corporation).
Key specifications for AIC775-8-9: Surface Treatment Document and Classification: MIL-A-8625,TY 1 OR 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Material Accommodated Thickness: 0.656 INCHES MINIMUM AND 0.719 INCHES MAXIMUM IN; Turnlock Stud Shank Style: STUD SHANK; Material Document and Classification: QQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6,T851 OR T8511 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 12 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.