The Stud Assembly,turnlock Fastener, cataloged under National Stock Number 5325-00-256-3748, 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 19 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5325-00-256-3748 |
| Primary Part Number | 26S51-14 |
| 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-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Eyelet Outside Diameter | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Drive Type | CROSS RECESS |
| Material Accommodated Thickness | 0.420 INCHES MINIMUM AND 0.449 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE EYELET |
| Material Document and Classification | QQ-W-423 FED SPEC SINGLE MATERIAL RESPONSE EJECTOR SPRING |
| Material Document and Classification | QQ-W-423 FED SPEC SINGLE MATERIAL RESPONSE PIN |
| Material Document and Classification | QQ-W-423 FED SPEC 1ST MATERIAL RESPONSE OR CARPENTER NO. 10 CAGEC 71321 MFR REF 2ND MATERIAL RESPONSE STUD |
| Diameter | 0.298 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN |
| Securing Device Type | SPRING |
| Distance From Engaging Member to Largest Bearing Surface of Head | 0.941 INCHES NOMINAL IN |
| Turnlock Stud Head Style | FILLISTER |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 302 OR STEEL CORROSION RESISTING STUD |
| Material | STEEL COMP 305 EYELET |
| Material | STEEL COMP 302 PIN |
| Material | STEEL COMP 302 EJECTOR SPRING |
| Stud Assembly Style | STUD ASSEMBLY |
| Eyelet Length | 0.322 INCHES NOMINAL 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 |
|---|---|
| 26S51-14 | Fairchild Fasteners Europe - Camloc Gmbh (DEU) |
| A242AH14 | Leonardo Spa Helicopters Division - Production Site (ITA) |
| 26S51-14 PRIMARY | Howmet Global Fastening Systems Inc Div Camloc Products (USA) |
| 26S51-14 | Siemens Ag - Anl A44 S - (DEU) |
| Reference | Meaning |
|---|---|
| 012-4961-140 | 7/2 Vendor item drawing reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| SMA569571-11 | 5/2 Secondary reference U.S. Government activity |
NSN 5325-00-256-3748 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 5325-00-256-3748 has 4 manufacturer part numbers on file: 26S51-14 (Fairchild Fasteners Europe - Camloc Gmbh), A242AH14 (Leonardo Spa Helicopters Division - Production Site), 26S51-14 (Howmet Global Fastening Systems Inc Div Camloc Products), 26S51-14 (Siemens Ag - Anl A44 S -).
Key specifications for 26S51-14: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Eyelet Outside Diameter: 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Drive Type: CROSS RECESS; Material Accommodated Thickness: 0.420 INCHES MINIMUM AND 0.449 INCHES MAXIMUM IN. 19 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.