The Washer,concave, cataloged under National Stock Number 5310-00-083-9303, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is The Boeing Company Div Defense. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 13 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-083-9303 |
| Primary Part Number | BACW10AU3 |
| Item Name | Washer,concave |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Radius | 0.235 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN |
| Outside Diameter | 0.375 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Style Designator | CONCAVE |
| Material Document and Classification | MIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-18729 MIL SPEC 3RD MATERIAL RESPONSE OR ASTM A322 ASSN STD 4TH MATERIAL RESPONSE OVERALL |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Heat Treatment | AS FABRICATED |
| Hardness Rating | 38.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM |
| Specification/standard Data | 81205-BACW10AU MANUFACTURERS STANDARD |
| Material Thickness | 0.078 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN |
| Hole Diameter | 0.252 INCHES MINIMUM AND 0.258 INCHES MAXIMUM IN |
| Recess Depth | 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN |
| Surface Finish | 63.0 MICROINCHES COUNTERBORE WALL |
| Material | STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 4130 OR STEEL COMP 4027 OVERALL |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 3M348L3 | The Boeing Company Div Defense (USA) |
| 53488W-1032 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| K19701P3 | Howmet Global Fastening Systems Inc (USA) |
| TLN1020L3W | Sps Technologies, Llc Dba PB Fasteners (USA) |
| TLN1020L3W | Howmet Global Fastening Systems Inc Div Torrance Operations (USA) |
| AS46-3 | Anillo Industries Llc (USA) |
| BACW10AU3 PRIMARY | The Boeing Company Div Defense (USA) |
| TLN1020L3W | Sps Technologies, Llc Dba Aerospace Fasteners Group Div Aerospace - Santa Ana (USA) |
| TLN1020L3W | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| TLN1020L3W | Reid Products Inc. Dba Reid Products Inc (USA) |
| 6073-0 | Harvard Industries Inc (USA) |
| K19701P3 | Satair A/s (DNK) |
| TLN1020L3W PRIMARY | Huck International, Inc (USA) |
| 3M348L3 | Sps Technologies, Llc Dba Aerospace Fasteners Group Div Aerospace - Santa Ana (USA) |
| TLN1020L3W | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| TLN1020L3W | Huck Intl Inc (USA) |
NSN 5310-00-083-9303 is a Washer,concave, manufactured by The Boeing Company Div Defense, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-00-083-9303 has 16 cross-referenced part numbers: 3M348L3 (The Boeing Company Div Defense), 53488W-1032 (Sps Technologies, Llc Dba PB Fasteners), K19701P3 (Howmet Global Fastening Systems Inc), TLN1020L3W (Sps Technologies, Llc Dba PB Fasteners), TLN1020L3W (Howmet Global Fastening Systems Inc Div Torrance Operations) and 11 more.
There are 9 known substitutes for 5310-00-083-9303: 5306-00-167-3912, 5330-00-285-8279, 4320-00-484-1444 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for BACW10AU3: Radius: 0.235 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN; Outside Diameter: 0.375 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN; Style Designator: CONCAVE; Material Document and Classification: MIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-18729 MIL SPEC 3RD MATERIAL RESPONSE OR ASTM A322 ASSN STD 4TH MATERIAL RESPONSE OVERALL. 14 total characteristics are documented in the Federal Logistics Information System.