The Delay Line, cataloged under National Stock Number 5999-01-020-7271, is classified within Federal Supply Class 5999 (Miscellaneous Electrical and Electronic Components) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Raytheon Co. Government technical data includes 26 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-01-020-7271 |
| Primary Part Number | 37654893-001 |
| Item Name | Delay Line |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Raytheon Co |
| Status | ACTIVE |
| Pulse Rise Time Rating | 25.0 NANOSECONDS NS |
| Signal Delay Method | INDUCTANCE |
| Section Delay Time | 150.000 NANOSECONDS NOMINAL SINGLE SECTION NS |
| Mounting Facility Quantity | 13 |
| Inclosure Type | ENCASED |
| Output Impedance Rating | 100.000 OHMS |
| Surface Treatment Document and Classification | MIL-T-10727, TYPE 1 OR 2 MIL SPEC SINGLE TREATMENT RESPONSE TERMINAL |
| Body Style | RECTANGULAR |
| Body Width | 0.400 INCHES MAXIMUM IN |
| Individual Section Quantity | 1 |
| Material Document and Classification | MIL-M-14, TYPE SDG MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | QQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE TERMINAL |
| Frequency Bandwidth | 1000.0 KILOHERTZ NOMINAL |
| Segment Quantity Per Section | 10 SINGLE SECTION |
| Delay Time Variation Method | TAPPED |
| Segment Delay Time | 15.000 NANOSECONDS NOMINAL SINGLE SECTION ALL SEGMENTS NS |
| Body Length | 0.910 INCHES MAXIMUM IN |
| Input Impedance Rating | 68.000 OHMS |
| Mounting Facility | TERMINAL |
| Terminal Type and Quantity | 13 PIN |
| Surface Treatment | TIN TERMINAL |
| Operating Temp Range | -55.0 TO 125.0 CELSIUS DEGC |
| Material | PLASTIC POLYHEXAMETHYLENE ADIPAMIDE AND GLASS OR PLASTIC POLYCAPROLACTAM AND GLASS OR PLASTIC POLYHEXAMETHYLENE SEBACAMIDE AND GLASS BODY |
| Material | COPPER ALLOY 130 TERMINAL |
| Body Depth | 0.310 INCHES MAXIMUM IN |
| Voltage Rating | 25.000 VOLTS NOMINAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | J |
| Weight | 0.0100 lbs |
| Cube | 0.0010 cu ft |
| Part Number | Manufacturer |
|---|---|
| 37654893-001 PRIMARY | Raytheon Co (USA) |
| L-21-155 | Shallcross Inc (USA) |
| Reference | Meaning |
|---|---|
| XNS-341 | 5/9 Secondary reference Fidelity Mfg Co |
| 32785 | 5/9 Secondary reference Fidelity Mfg Co |
NSN 5999-01-020-7271 is a Delay Line, manufactured by Raytheon Co, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-020-7271 has 2 manufacturer part numbers on file: 37654893-001 (Raytheon Co), L-21-155 (Shallcross Inc).
1 possible match (shared part number, not a government interchangeability claim): 2915-01-345-3080. Verify interchangeability with system specifications before substitution.
Key specifications for 37654893-001: Pulse Rise Time Rating: 25.0 NANOSECONDS NS; Signal Delay Method: INDUCTANCE; Section Delay Time: 150.000 NANOSECONDS NOMINAL SINGLE SECTION NS; Mounting Facility Quantity: 13. 26 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 5999-01-020-7271 has DEMIL Code Q. 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.