The Filter,band Pass, cataloged under National Stock Number 5915-01-502-0627, is classified within Federal Supply Class 5915 (Filters and Networks) of the Electrical and Electronic Equipment Components group. The manufacturer of record is K&l Microwave Llc. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5915-01-502-0627 |
| Primary Part Number | 8LB31-312.5/T175-N/N |
| Item Name | Filter,band Pass |
| FSC / FSG | 5915 / 59 — Filters and Networks |
| Manufacturer | K&l Microwave Llc |
| Status | ACTIVE |
| Reference Frequency Per Function | 312.5 MEGAHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Mounting Facility Type and Quantity | 2 THREADED HOLE(S) LOCATION NOT OTHERWISE SPECIFIED |
| Voltage Standing Wave Ratio Per Function | 1.5 1ST BAND PASS FIRST FUNCTION |
| Voltage Standing Wave Ratio Per Function | 1.7 2ND BAND PASS SECOND FUNCTION |
| Thread Tolerance Class | 2B INTERNAL |
| Inclosure Type | ENCASED |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Length | 3.380 INCHES NOMINAL IN |
| Functional Terminal Type and Quantity | 1 CONNECTOR, RECEPTACLE INPUT AND 1 CONNECTOR, RECEPTACLE OUTPUT LOCATION NOT OTHERWISE SPECIFIED |
| Body Width | 1.000 INCHES NOMINAL IN |
| Body Height | 0.750 INCHES NOMINAL IN |
| Style Designator | RECTANGULAR TERMINAL/TERMINALS ON OPPOSITE SURFACES |
| Mounting Facility Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Nominal Thread Size | 0.112 INCHES IN |
| Body Length | 3.580 INCHES NOMINAL IN |
| Input Impedance Per Function W/load | 50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Width | 0.080 INCHES NOMINAL IN |
| Frequency Band Width Per Function | 137.50 MEGAHERTZ BLANK AND 487.50 MEGAHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Insertion Loss at Reference Frequency Per Function in Decibels | 5.0 BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Load Impedance Per Function | 50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 25-P49041E001 | General Dynamics Mission Systems, Inc. (USA) |
| 8LB31-312.5/T175-N/N PRIMARY | K&l Microwave Llc (USA) |
| 8LB31-312.5/T175-N/N PRIMARY | K&l Microwave Llc (USA) |
| Reference | Meaning |
|---|---|
| 25-P49041E | D/9 Drawing number reference only General Dynamics Mission Systems, Inc. |
NSN 5915-01-502-0627 is a Filter,band Pass, manufactured by K&l Microwave Llc, classified under FSC 5915, Filters and Networks. Status: active.
NSN 5915-01-502-0627 has 3 manufacturer part numbers on file: 25-P49041E001 (General Dynamics Mission Systems, Inc.), 8LB31-312.5/T175-N/N (K&l Microwave Llc), 8LB31-312.5/T175-N/N (K&l Microwave Llc).
Key specifications for 8LB31-312.5/T175-N/N: Reference Frequency Per Function: 312.5 MEGAHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED; Mounting Facility Type and Quantity: 2 THREADED HOLE(S) LOCATION NOT OTHERWISE SPECIFIED; Voltage Standing Wave Ratio Per Function: 1.5 1ST BAND PASS FIRST FUNCTION; Voltage Standing Wave Ratio Per Function: 1.7 2ND BAND PASS SECOND FUNCTION. 19 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5915-01-502-0627 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.