PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B1971Relay,thermal

Meggitt (new Hampshire), Inc · NSN 5945-00-463-9956 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-463-9956 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-463-9956. Primary manufacturer part number: B1971.
Features
  • Relay,thermal — FSC 5945
  • 2 verified cross-references
  • Primary manufacturer: Meggitt (new Hampshire), Inc
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,thermal, cataloged under National Stock Number 5945-00-463-9956, is classified within Federal Supply Class 5945 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Meggitt (new Hampshire), Inc. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRelay,thermal
FSC / FSG5945 — No Item Name Available (FSG 59)
ManufacturersThales Nederland (CAGE H0203); Meggitt (new Hampshire), Inc (CAGE 58880)
Technical Specifications
ParameterValue
NSN5945-00-463-9956
Primary Part NumberB1971
Item NameRelay,thermal
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerMeggitt (new Hampshire), Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
3010-00-001-7812B1971 INTERCHANGEABLE
Retainer,snap Ring
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
5120-00-234-8913 INTERCHANGEABLE
Screwdriver,cross Tip
5930-00-440-1946308-37 INTERCHANGEABLE
Switch,toggle
Cummins Power Generation Inc.
3020-00-752-101730-8-37 INTERCHANGEABLE
Gear,helical
Dana Corp Spicer Transmission Div
7920-00-823-9818 INTERCHANGEABLE
Pad,metal Polish Impregnated
5315-00-903-5935MS20392-4C83 INTERCHANGEABLE
Pin,straight,headed
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5905-01-007-6253 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
4730-01-333-5907 INTERCHANGEABLE
Union,pipe
5330-01-459-975530837 INTERCHANGEABLE
Packing,preformed
Microwave Engineering Corporation
Cross-Reference Index
Part NumberManufacturer
308-37 Thales Nederland (NLD)
B1971 PRIMARY Meggitt (new Hampshire), Inc (USA)
Related Parts
3010-00-001-7812INTERCHANGEABLE
RETAINER,SNAP RING
B1971
5120-00-234-8913INTERCHANGEABLE
SCREWDRIVER,CROSS TIP
5930-00-440-1946INTERCHANGEABLE
SWITCH,TOGGLE
308-37
3020-00-752-1017INTERCHANGEABLE
GEAR,HELICAL
30-8-37
7920-00-823-9818INTERCHANGEABLE
PAD,METAL POLISH IMPREGNATED
5315-00-903-5935INTERCHANGEABLE
PIN,STRAIGHT,HEADED
MS20392-4C83
5905-01-007-6253INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
4730-01-333-5907INTERCHANGEABLE
UNION,PIPE
5330-01-459-9755INTERCHANGEABLE
PACKING,PREFORMED
30837

Frequently Asked Questions

What is NSN 5945-00-463-9956?

NSN 5945-00-463-9956 is a Relay,thermal, manufactured by Meggitt (new Hampshire), Inc, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-463-9956?

NSN 5945-00-463-9956 has 2 cross-referenced part numbers: 308-37 (Thales Nederland), B1971 (Meggitt (new Hampshire), Inc).

What NSN replaces 5945-00-463-9956?

There are 9 known substitutes for 5945-00-463-9956: 3010-00-001-7812, 5120-00-234-8913, 5930-00-440-1946 and 6 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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