The Nut Spacer,plate, cataloged under National Stock Number 5310-01-083-4119, 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. Div Tridair Products. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-083-4119 |
| Primary Part Number | CA21057-1C |
| Item Name | Nut Spacer,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Tridair Products |
| Status | ACTIVE |
| Plate Thickness | 0.032 INCHES MINIMUM AND 0.038 INCHES MAXIMUM IN |
| Nut Length | 0.905 INCHES MINIMUM AND 0.949 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-P-23377 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Plate Width | 0.540 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN |
| Mounting Hole Arrangement Style | 2 HOLES |
| Mounting Hole Countersink Angle | 0.098 DEGREES MINIMUM AND 102.0 DEGREES MAXIMUM |
| Material Document and Classification | QQ-S-766,COND A FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Mounting Hole Diameter | 0.104 INCHES MINIMUM AND 0.114 INCHES MAXIMUM IN |
| Mounting Provision Location | NUT PROJECTION SIDE |
| Specification/standard Data | 26512-GS540H MANUFACTURERS STANDARD |
| Distance From Aperture Center to Mounting Hole Center | 0.342 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN |
| Center to Center Distance Between Mounting Holes Along Length | 0.685 INCHES MINIMUM AND 0.689 INCHES MAXIMUM IN |
| Thru-Hole Diameter | 0.463 INCHES MINIMUM AND 0.473 INCHES MAXIMUM IN |
| Surface Treatment | PLASTIC OVERALL |
| Nut Style | PLATE NUT SPACER |
| Material | STEEL COMP 302 OR STEEL COMP 304 OVERALL |
| Nut Mounting Provision | COUNTERSUNK HOLES |
| 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 |
|---|---|
| CA21057-1C PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| Reference | Meaning |
|---|---|
| GS540H1 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 5310-01-083-4119 is a Nut Spacer,plate, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-083-4119 has 1 manufacturer part number on file: CA21057-1C (Howmet Global Fastening Systems Inc. Div Tridair Products).
Key specifications for CA21057-1C: Plate Thickness: 0.032 INCHES MINIMUM AND 0.038 INCHES MAXIMUM IN; Nut Length: 0.905 INCHES MINIMUM AND 0.949 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-P-23377 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Plate Width: 0.540 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN. 17 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.