The Lock,valve Spring Retainer, cataloged under National Stock Number 2815-00-365-2275, is classified within Federal Supply Class 2815 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-00-365-2275 |
| Primary Part Number | 3B1143 |
| Item Name | Lock,valve Spring Retainer |
| FSC / FSG | 2815 / 28 — No Item Name Available |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Largest Outside Diameter | 0.654 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN |
| Top Countersink Included Angle in Deg | 30.0 |
| Style Designator | STRAIGHT COUNTERSINK BORE-STRAIGHT SIDES |
| Thread Provision | UNTHREADED |
| Minimum Inside Diameter | 0.493 INCHES IN |
| Largest Top Countersink Diameter | 0.469 INCHES NOMINAL IN |
| Inside Included Angle in Deg | 105.0 |
| Largest Inside Diameter | 0.375 INCHES NOMINAL IN |
| Material | STEEL |
| Casehardening Indicator | CASEHARDENED |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| H224 | Aluminum Industries Inc (USA) |
| LK131 | Toledo Pickling & Steel Sales (USA) |
| 3B1143 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| IPD3B1143 | Industrial Parts Depot, Llc Dba Ipd (USA) |
| U135 | Associated Spring Us, Llc Div Corry (USA) |
| R155 | Eaton Corp Dba Eaton Aerospace Jackson (USA) |
| 321143 | Striegel Supply, Inc. Dba Striegel Supply Inc (USA) |
| J135 | Allied Motor Parts Co (USA) |
NSN 2815-00-365-2275 is a Lock,valve Spring Retainer, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2815 (No Item Name Available). Status: active.
NSN 2815-00-365-2275 has 8 cross-referenced part numbers: H224 (Aluminum Industries Inc), LK131 (Toledo Pickling & Steel Sales), 3B1143 (Caterpillar Inc Div Caterpillar Defense), IPD3B1143 (Industrial Parts Depot, Llc Dba Ipd), U135 (Associated Spring Us, Llc Div Corry) and 3 more.
There are 10 known substitutes for 2815-00-365-2275: 3040-00-104-0352, 4820-00-134-4399, 3110-00-155-7356 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for 3B1143: Special Features: SIMULA TO STYLE 25 EXCEPT TAPERED BORE 2.500 PER FT TO COUNTERSINK; SPLINT IN THREE SECTIONS 120 DEG; Largest Outside Diameter: 0.654 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN; Top Countersink Included Angle in Deg: 30.0; Style Designator: STRAIGHT COUNTERSINK BORE-STRAIGHT SIDES. 12 total characteristics are documented in the Federal Logistics Information System.