The Nut Assembly,self-Locking,gang C, cataloged under National Stock Number 5310-01-186-8630, 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 28 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-186-8630 |
| Primary Part Number | G49439E3-10-57 |
| Item Name | Nut Assembly,self-Locking,gang C |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE CHANNEL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Nut Quantity | 57 |
| Removable Nut Manufacturer Part Number | ST3M445C4M6 |
| Material Document and Classification | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE CHANNEL |
| Material Document and Classification | GS35 FSCM 77535 MFR REF 1ST MATERIAL RESPONSE OR COMP XM-28 ASSN STD 2ND MATERIAL RESPONSE CLIP |
| Nut Counterbore Depth | 0.188 INCHES MINIMUM NUT IN |
| Features Provided | FLOATING NUT |
| Channel Height | 0.250 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Counterbore Diameter | 0.194 INCHES MINIMUM NUT IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Assembly Overall Height | 0.366 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE CHANNEL |
| Surface Treatment | NICKEL OR COPPER OR NICKEL AND COPPER NUT |
| Surface Treatment | PASSIVATE CLIP |
| Nut Style | GANG CHANNEL, SELF LOCKING |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 NUT |
| Material | STEEL COMP 321 CHANNEL |
| Material | STEEL COMP 302 OR STEEL COMP XM-28 CLIP |
| Nut Spacing | 1.250 INCHES NOMINAL IN |
| Channel Style | STRAIGHT TYPE |
| Removable Nut Manufacturer Code | 76301 |
| 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 |
|---|---|
| G49439E3-10-57 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| BGC463N3-10-57 PRIMARY | Bristol Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| G18421JL3-3-10 | 5/9 Secondary reference Harvard Industries Inc |
| 3M463N10A57-3 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 10110097 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| C170-3-3-10-57 | 3/2 Design control — primary reference U.S. Government activity |
| 3M463N10A57-3 | C/1 Advisory reference — outside the item-of-supply concept Harvard Industries Inc |
| 3M463N10A57-3 | 5/9 Secondary reference U.S. Government activity |
| 3M463N10A57-3 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| 3M463N10A57-3 | 5/9 Secondary reference Bristol Industries, Llc |
NSN 5310-01-186-8630 is a Nut Assembly,self-Locking,gang C, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-186-8630 has 2 manufacturer part numbers on file: G49439E3-10-57 (Howmet Global Fastening Systems Inc), BGC463N3-10-57 (Bristol Industries, Llc).
Key specifications for G49439E3-10-57: Lubrication: DRY FILM LUBRICANT; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE CHANNEL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Nut Quantity: 57. 28 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.