The Nut,self-Locking,plate, cataloged under National Stock Number 5310-01-027-5288, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Qualified Air Components Inc.. Government technical data includes 22 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-027-5288 |
| Primary Part Number | S2B-34 |
| Item Name | Nut,self-Locking,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Qualified Air Components Inc. |
| Status | ACTIVE |
| Plate Thickness | 0.050 INCHES MINIMUM IN |
| Nut Length | 1.090 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-A-8625A MIL SPEC SINGLE TREATMENT RESPONSE SHELL A |
| Surface Treatment Document and Classification | QQ-P-416A,TYPE 1,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-P-416A,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE NUT A |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Plate Width | 0.520 INCHES MAXIMUM IN |
| Mounting Hole Arrangement Style | 2 HOLES |
| Mounting Hole Diameter | 0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Specification/standard Data | 81205-BACN10LE MANUFACTURERS STANDARD |
| Distance From Aperture Center to Mounting Hole Center | 0.339 INCHES MINIMUM AND 0.349 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Center to Center Distance Between Mounting Holes Along Length | 0.310 INCHES MINIMUM AND 0.314 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM NUT |
| Surface Treatment | ANODIZE SHELL |
| Nut Style | PLATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | ALUMINUM ALLOY 5052 OR ALUMINUM ALLOY 6061 SHELL |
| Material | STEEL COMP 1137 OR STEEL COMP 1117 OR STEEL COMP 1118 NUT |
| Nut Mounting Provision | STRAIGHT 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 |
|---|---|
| S2B-34 PRIMARY | Qualified Air Components Inc. (USA) |
| BACN10RL-3B4 | Howmet Global Fastening Systems Inc. Div Microdot Products (USA) |
| BACN10RL-3B4 | Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| BACN10LE-B34 | 5/9 Secondary reference U.S. Government activity |
| 9610D-02-4 | 3/2 Design control — primary reference U.S. Government activity |
| BACN10RL-3B4 | 3/2 Design control — primary reference U.S. Government activity |
| 2000-B34 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-027-5288 is a Nut,self-Locking,plate, manufactured by Qualified Air Components Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-027-5288 has 3 manufacturer part numbers on file: S2B-34 (Qualified Air Components Inc.), BACN10RL-3B4 (Howmet Global Fastening Systems Inc. Div Microdot Products), BACN10RL-3B4 (Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems).
Key specifications for S2B-34: Overall Height: 0.640 INCHES MAXIMUM IN; Plate Thickness: 0.050 INCHES MINIMUM IN; Nut Length: 1.090 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-A-8625A MIL SPEC SINGLE TREATMENT RESPONSE SHELL A. 22 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.