The Lens,light, cataloged under National Stock Number 6220-01-121-5627, is classified within Federal Supply Class 6220 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Grimes Aerospace Company. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6220-01-121-5627 |
| Primary Part Number | 31-3977-1 |
| Item Name | Lens,light |
| FSC / FSG | 6220 / 62 — No Item Name Available |
| Manufacturer | Grimes Aerospace Company |
| Status | ACTIVE |
| Light Transmission Design | TRANSLUCENT LENS |
| Overall Diameter | 4.120 INCHES MAXIMUM IN |
| Flange Width | 0.641 INCHES NOMINAL IN |
| Material | GLASS LENS |
| Effective Diameter | 2.750 INCHES NOMINAL IN |
| Mounting Method | SCREW RING |
| Surface Condition | SMOOTH FACE |
| Color | CLEAR LENS |
| Style Designator | CONVEX |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 6220-01-121-5627 is a Lens,light, manufactured by Grimes Aerospace Company, classified under FSC 6220 (No Item Name Available). Status: active.
NSN 6220-01-121-5627 has 3 cross-referenced part numbers: 1670-1 (Grimes Aerospace Company), 1670-1 (Control Products Corporation), 31-3977-1 (Grimes Aerospace Company).
There are 11 known substitutes for 6220-01-121-5627: 5950-00-150-0943, 5998-00-307-9964, 5985-00-404-2285 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for 31-3977-1: Light Transmission Design: TRANSLUCENT LENS; Overall Height: 0.410 INCHES NOMINAL IN; Overall Diameter: 4.120 INCHES MAXIMUM IN; Flange Width: 0.641 INCHES NOMINAL IN. 10 total characteristics are documented in the Federal Logistics Information System.