The Washer,slotted, cataloged under National Stock Number 5310-00-703-2640, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-703-2640 |
| Primary Part Number | 7745387 |
| Item Name | Washer,slotted |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Surface Treatment Document and Classification | PRO STD 79 FSCM 12204 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | SLOTTED |
| Outside Diameter | 1.188 INCHES NOMINAL IN |
| Material Thickness | 0.105 INCHES NOMINAL IN |
| Surface Treatment | ZINC OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 0.750 INCHES MINIMUM AND 0.760 INCHES MAXIMUM 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 |
|---|---|
| 7032640 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 7745387 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 79443 | Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems (USA) |
| Reference | Meaning |
|---|---|
| 28-79443 | 5/9 Secondary reference Rivinius Inc Littleford Machinery Div |
| 79443 | 3/9 Design control — primary reference Chrysler Realty Company Llc Dba Daimler Chrysler |
NSN 5310-00-703-2640 is a Washer,slotted, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-703-2640 has 3 manufacturer part numbers on file: 7032640 (U S Army Tank Automotive Command Amsta-Im-Mm), 7745387 (U S Army Tank Automotive Command Amsta-Im-Mm), 79443 (Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems).
1 possible match (shared part number, not a government interchangeability claim): 5120-01-721-9528. Verify interchangeability with system specifications before substitution.
Key specifications for 7745387: Surface Treatment Document and Classification: PRO STD 79 FSCM 12204 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Style Designator: SLOTTED; Outside Diameter: 1.188 INCHES NOMINAL IN; Material Thickness: 0.105 INCHES NOMINAL IN. 7 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.