The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-00-249-5986, 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 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-249-5986 |
| Primary Part Number | 12S1-21-1AA |
| 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-416A,CLASS 2,TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL A |
| Eyelet Outside Diameter | 0.344 INCHES MINIMUM AND 0.364 INCHES MAXIMUM IN |
| Drive Type | SLOTTED |
| Material Accommodated Thickness | 0.275 INCHES MINIMUM AND 0.289 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE STUD |
| Diameter | 0.294 INCHES MINIMUM AND 0.306 INCHES MAXIMUM IN |
| Securing Device Type | SPRING |
| Distance From Engaging Member to Largest Bearing Surface of Head | 0.579 INCHES NOMINAL IN |
| Turnlock Stud Head Style | FILLISTER |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 4037 STUD |
| 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 |
|---|---|
| 12S1-21-1AA | Fairchild Fasteners Europe - Camloc Gmbh (DEU) |
| 12S1-21-1AA PRIMARY | Howmet Global Fastening Systems Inc Div Camloc Products (USA) |
| Reference | Meaning |
|---|---|
| STSEC007AS21 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5325-00-249-5986 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 5325-00-249-5986 has 2 manufacturer part numbers on file: 12S1-21-1AA (Fairchild Fasteners Europe - Camloc Gmbh), 12S1-21-1AA (Howmet Global Fastening Systems Inc Div Camloc Products).
Key specifications for 12S1-21-1AA: Surface Treatment Document and Classification: QQ-P-416A,CLASS 2,TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL A; Eyelet Outside Diameter: 0.344 INCHES MINIMUM AND 0.364 INCHES MAXIMUM IN; Drive Type: SLOTTED; Material Accommodated Thickness: 0.275 INCHES MINIMUM AND 0.289 INCHES MAXIMUM IN. 13 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.