The Nut,self-Locking,clinch, cataloged under National Stock Number 5310-00-404-4173, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 15 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-404-4173 |
| Primary Part Number | 22LHCFM2-40 |
| Item Name | Nut,self-Locking,clinch |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Temp Rating | 550.0 FAHRENHEIT NOMINAL DEGF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.112 INCHES IN |
| Nut Diameter | 0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN |
| Pilot Diameter | 0.158 INCHES MINIMUM AND 0.162 INCHES MAXIMUM IN |
| Pilot Length | 0.057 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.169 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | CLINCH |
| Thread Class | 3B |
| Thread Quantity Per Inch | 40 |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 22LHCFM2-40 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 950256-2 | 5/9 Secondary reference Litton Systems Inc. Div Navigation Systems Division |
| 950256-2 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| 38696 | 5/9 Secondary reference U.S. Government activity |
| 7119383-2 | 5/9 Secondary reference Litton Systems Inc Guidance and Control Systems Div |
| 7119383-2 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| 222HCFM2-40 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 22LHCFM2-40 | 5/9 Secondary reference Harvard Industries Inc |
| 7119383-2 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
NSN 5310-00-404-4173 is a Nut,self-Locking,clinch, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-404-4173 has 1 manufacturer part number on file: 22LHCFM2-40 (Sps Technologies, Llc Dba PB Fasteners).
3 possible matches (shared part number, not a government interchangeability claim): 5310-00-815-8833, 5120-01-170-4448, 5310-01-441-9197. Verify interchangeability with system specifications before substitution.
Key specifications for 22LHCFM2-40: Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL COARSE (UNC); Temp Rating: 550.0 FAHRENHEIT NOMINAL DEGF; Thread Direction: RIGHT-HAND. 15 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.