The Switch,sensitive, cataloged under National Stock Number 5930-01-155-8520, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Sef Power. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5930-01-155-8520 |
| Primary Part Number | 21EN87-6 |
| Item Name | Switch,sensitive |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Sef Power |
| Status | ACTIVE |
| Bushing Length | 0.657 INCHES NOMINAL IN |
| Body Diameter | 1.000 INCHES NOMINAL IN |
| Inclosure Type | FULLY INCLOSED |
| Body Style | BUSHING MOUNTED |
| Actuator Style | ROLLER PLUNGER |
| Mounting Method | THREADED BUSHING |
| Switch Actuating Force | 96.0 OUNCES MINIMUM AND 192.0 OUNCES MAXIMUM OZ |
| Switch Release Force | 64.0 OUNCES MINIMUM OZ |
| Nominal Thread Size | 0.625 INCHES IN |
| Body Length | 1.100 INCHES MAXIMUM IN |
| Actuator Roller Width | 0.120 INCHES NOMINAL IN |
| Actuator Movement | 0.040 PRETRAVEL INCHES MAXIMUM AND 0.250 OVERTRAVEL INCHES MINIMUM AND 0.020 DIFFERENTIAL INCHES MAXIMUM |
| Nonpile-Up Contact Arrangement | 1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY SINGLE SWITCH UNIT |
| Maximum Voltage Rating in Volts | 28.0 DC |
| Terminal Type and Quantity | 3 WIRE LEAD |
| Thread Series Designator | UNEF |
| Actuator Roller Diameter | 0.500 INCHES NOMINAL IN |
| Contact Load Current Rating at Maximum Rated Voltage | 4.000 AMPERES RESISTIVE DC AND 2.000 AMPERES INDUCTIVE DC AND 4.000 AMPERES MOTOR DC |
| Actuator Free Position Height | 1.781 INCHES NOMINAL IN |
| Hazardous Locations/environmental Protection | CORROSION RESISTANT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 21EN87-6 | Sef Power (FRA) |
| Reference | Meaning |
|---|---|
| 21EN87-6 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5930-01-155-8520 is a Switch,sensitive, manufactured by Sef Power, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-155-8520 has 1 manufacturer part number on file: 21EN87-6 (Sef Power).
Key specifications for 21EN87-6: Bushing Length: 0.657 INCHES NOMINAL IN; Body Diameter: 1.000 INCHES NOMINAL IN; Overall Height: 1.000 INCHES NOMINAL IN; Inclosure Type: FULLY INCLOSED. 20 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.
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.