The Nut Spacer,plate, cataloged under National Stock Number 5310-00-701-1297, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Monadnock Company, the Dba Lisi Aerospace. Government technical data includes 14 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-701-1297 |
| Primary Part Number | BACS18G40B |
| Item Name | Nut Spacer,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Monadnock Company, the Dba Lisi Aerospace |
| Status | ACTIVE |
| Plate Thickness | 0.385 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN |
| Nut Length | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN |
| Plate Width | 0.430 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN |
| Mounting Hole Arrangement Style | 2 HOLES |
| Mounting Hole Countersink Angle | 100.00 DEGREES NOMINAL |
| Material Document and Classification | QQ-A-250/5 TEMPER T3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/5 TEMPER T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Mounting Hole Diameter | 0.200 INCHES NOMINAL IN |
| Mounting Provision Location | OPPOSITE NUT PROJECTION SIDE |
| Distance From Aperture Center to Mounting Hole Center | 0.339 INCHES MINIMUM AND 0.349 INCHES MAXIMUM IN |
| Center to Center Distance Between Mounting Holes Along Length | 0.682 INCHES MINIMUM AND 0.692 INCHES MAXIMUM IN |
| Thru-Hole Diameter | 0.192 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN |
| Nut Style | PLATE NUT SPACER |
| Material | ALUMINUM ALLOY 2024 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 |
|---|---|
| BACS18G40B PRIMARY | Monadnock Company, the Dba Lisi Aerospace (USA) |
| Reference | Meaning |
|---|---|
| BACS18G40B | 3/2 Design control — primary reference U.S. Government activity |
| 295925-40 | 5/9 Secondary reference Monadnock Company, the Dba Lisi Aerospace |
| BACS18F40B | 5/9 Secondary reference U.S. Government activity |
| BACS18G40B | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5310-00-701-1297 is a Nut Spacer,plate, manufactured by Monadnock Company, the Dba Lisi Aerospace, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-701-1297 has 1 manufacturer part number on file: BACS18G40B (Monadnock Company, the Dba Lisi Aerospace).
Key specifications for BACS18G40B: Plate Thickness: 0.385 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN; Nut Length: 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN; Plate Width: 0.430 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN; Mounting Hole Arrangement Style: 2 HOLES. 14 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.