The Clamp,hub, cataloged under National Stock Number 3040-00-120-4913, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Roller Bearing Co of America, Inc Div Pic Design. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-120-4913 |
| Primary Part Number | L1-21 |
| Item Name | Clamp,hub |
| FSC / FSG | 3040 / 30 — No Item Name Available |
| Manufacturer | Roller Bearing Co of America, Inc Div Pic Design |
| Status | ACTIVE |
| Outside Diameter | 1.219 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 303 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 30303 ASSN STD SINGLE MATERIAL RESPONSE |
| Style Designator | ROUND, SINGLE BOLT SECURED |
| Material | STEEL COMP 303 |
| Furnished Items and Quantity | 1 SOCKET HEAD CAP SCREW |
| Thickness | 0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN |
| Nominal Thread Size | 0.164 INCHES IN |
| Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Bore Diameter | 0.4375 INCHES NOMINAL IN |
| Counterbore Diameter | 0.2700 INCHES NOMINAL IN |
| Clamp Securing Hole Style | THREADED |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| L1-21 PRIMARY | Roller Bearing Co of America, Inc Div Pic Design (USA) |
| CG-174 PRIMARY | Secs Inc (USA) |
| 8437441-2 | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
| 8437441 | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
| CG1-18 | W. M. Berg, Inc. (USA) |
NSN 3040-00-120-4913 is a Clamp,hub, manufactured by Roller Bearing Co of America, Inc Div Pic Design, classified under FSC 3040 (No Item Name Available). Status: active.
NSN 3040-00-120-4913 has 5 cross-referenced part numbers: L1-21 (Roller Bearing Co of America, Inc Div Pic Design), CG-174 (Secs Inc), 8437441-2 (Army, United States Department of the Dba Rock Island Arsenal Jmtc), 8437441 (Army, United States Department of the Dba Rock Island Arsenal Jmtc), CG1-18 (W. M. Berg, Inc.).
There are 4 known substitutes for 3040-00-120-4913: 5935-00-600-8835, 3040-00-918-4532, 3040-00-938-2869 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for L1-21: Outside Diameter: 1.219 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN; Surface Treatment: PASSIVATE; Material Document and Classification: FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 303 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 30303 ASSN STD SINGLE MATERIAL RESPONSE; Style Designator: ROUND, SINGLE BOLT SECURED. 12 total characteristics are documented in the Federal Logistics Information System.