The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-00-255-0737, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc Div Camloc Products. Government technical data includes 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-255-0737 |
| Primary Part Number | 12S1-12-1AA |
| Item Name | Stud Assembly,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Howmet Global Fastening Systems Inc Div Camloc Products |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Eyelet Outside Diameter | 0.344 INCHES MINIMUM AND 0.364 INCHES MAXIMUM IN |
| Drive Type | SLOTTED |
| Material Accommodated Thickness | 0.140 INCHES MINIMUM AND 0.154 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE PIN |
| Material Document and Classification | QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE EJECTOR SPRING |
| Diameter | 0.294 INCHES MINIMUM AND 0.306 INCHES MAXIMUM IN |
| Securing Device Type | WASHER |
| Distance From Engaging Member to Largest Bearing Surface of Head | 0.283 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN |
| Turnlock Stud Head Style | FILLISTER |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Material | STEEL COMP 4037 STUD |
| Material | STEEL EJECTOR SPRING |
| Material | STEEL PIN |
| Material | STEEL COMP 1009 EYELET |
| Stud Assembly Style | STUD ASSEMBLY |
| Stud Diameter | 0.122 INCHES MINIMUM AND 0.128 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 |
|---|---|
| WDG9027-37 | Bae Systems (GBR) |
| 12S1-12-1AA PRIMARY | Howmet Global Fastening Systems Inc Div Camloc Products (USA) |
| FMC-006 | Bae Systems (GBR) |
| Reference | Meaning |
|---|---|
| 971240-8 | 5/2 Secondary reference U.S. Government activity |
| 530922-8 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5325-00-255-0737 is a Stud Assembly,turnlock Fastener, manufactured by Howmet Global Fastening Systems Inc Div Camloc Products, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-255-0737 has 3 manufacturer part numbers on file: WDG9027-37 (Bae Systems), 12S1-12-1AA (Howmet Global Fastening Systems Inc Div Camloc Products), FMC-006 (Bae Systems).
Key specifications for 12S1-12-1AA: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC ALL TREATMENT RESPONSES OVERALL; Eyelet Outside Diameter: 0.344 INCHES MINIMUM AND 0.364 INCHES MAXIMUM IN; Drive Type: SLOTTED; Material Accommodated Thickness: 0.140 INCHES MINIMUM AND 0.154 INCHES MAXIMUM IN. 17 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.