The Nut,self-Locking,plate, cataloged under National Stock Number 5310-01-276-3341, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 29 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-276-3341 |
| Primary Part Number | C9756-4 |
| Item Name | Nut,self-Locking,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Plate Thickness | 0.030 INCHES MAXIMUM IN |
| Nut Length | 0.970 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SHELL |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE WASHER |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Plate Width | 0.635 INCHES MAXIMUM IN |
| Mounting Hole Arrangement Style | 2 HOLES |
| Material Document and Classification | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE SHELL |
| Material Document and Classification | MIL-R-25988 MIL SPEC SINGLE MATERIAL RESPONSE SEAL |
| Material Document and Classification | MIL-S-18729 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 5085 ASSN STD 2ND MATERIAL RESPONSE NUT |
| Material Document and Classification | QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE WASHER |
| Mounting Hole Diameter | 0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.2500 INCHES IN |
| Distance From Aperture Center to Mounting Hole Center | 0.371 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN |
| Center to Center Distance Between Mounting Holes Along Length | 0.750 INCHES MINIMUM AND 0.754 INCHES MAXIMUM IN |
| Nut Height | 0.350 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM NUT |
| Surface Treatment | PASSIVATE SHELL |
| Surface Treatment | CADMIUM AND CHROMATE WASHER |
| Nut Style | PLATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 SHELL |
| Material | RUBBER FLUOROSILICONE CLASS FQ SEAL |
| Material | STEEL COMP 1117 WASHER |
| Material | STEEL COMP 4130 OR STEEL COMP 1050 NUT |
| 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 |
|---|---|
| C9756-4 | Howmet Global Fastening Systems Inc (USA) |
| MF52829-4 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| C9756-4 | 7/2 Vendor item drawing reference U.S. Government activity |
| 5310PL0650282 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| NS202837G-048 | 3/2 Design control — primary reference U.S. Government activity |
| 5310PL1715330 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5310-01-276-3341 is a Nut,self-Locking,plate, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-276-3341 has 2 manufacturer part numbers on file: C9756-4 (Howmet Global Fastening Systems Inc), MF52829-4 (Howmet Global Fastening Systems Inc).
Key specifications for C9756-4: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.560 INCHES MAXIMUM IN; Plate Thickness: 0.030 INCHES MAXIMUM IN; Nut Length: 0.970 INCHES MAXIMUM IN. 29 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.