The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-01-054-7425, 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 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5325-01-054-7425 |
| Primary Part Number | 27S12-3-1BB |
| 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 SINGLE TREATMENT RESPONSE STUD |
| Eyelet Outside Diameter | 0.305 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN |
| Drive Type | SLOTTED |
| Material Accommodated Thickness | 0.090 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN |
| Diameter | 0.251 INCHES MINIMUM AND 0.256 INCHES MAXIMUM IN |
| Turnlock Stud Head Style | FLAT COUNTERSUNK |
| Surface Treatment | CADMIUM AND CHROMATE STUD |
| Surface Treatment | PASSIVATE EYELET |
| Material | COBALT ALLOY PIN |
| Material | STEEL COMP 305 EYELET |
| Material | COBALT ALLOY EJECTOR SPRING |
| Material | COPPER ALLOY 172 STUD |
| Stud Assembly Style | STUD ASSEMBLY |
| 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 |
|---|---|
| 27S12-3-1BB PRIMARY | Howmet Global Fastening Systems Inc Div Camloc Products (USA) |
| Reference | Meaning |
|---|---|
| BACS21Y3BC | 1/2 Source control — Government-approved source U.S. Government activity |
| BACS21Y3BC | C/1 Advisory reference — outside the item-of-supply concept The Boeing Company |
NSN 5325-01-054-7425 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 5325-01-054-7425 has 1 manufacturer part number on file: 27S12-3-1BB (Howmet Global Fastening Systems Inc Div Camloc Products).
Key specifications for 27S12-3-1BB: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE STUD; Eyelet Outside Diameter: 0.305 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN; Drive Type: SLOTTED; Material Accommodated Thickness: 0.090 INCHES MINIMUM AND 0.119 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.