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MODEL 91 — Technical Data Sheet

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— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The MODEL 91 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System under NSN 6685-00-531-2726, indicating validated use in U.S. government and defense logistics supply chains.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MODEL 91
NSN: 6685-00-531-2726
FSC: 6685
CAGE: 72100 — LIFTEC INC DIV LIFTEC, INC. (USA)
SPECIFICATIONS
Part NumberMODEL 91
NSN6685-00-531-2726
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MODEL 91 TITLE COMPONENT PN MODEL 91 MFR MODEL 91
KEY FEATURES
•
ACTUATING MEDIUM: METHYL CHLORIDE
•
SCALE SMALLEST INCREMENT: 10.0 DEG FAHRENHEIT
•
SCALE INSCRIPTION/BACKGROUND COLOR: WHITE MARKINGS ON BLACK
•
STYLE DESIGNATOR: BULB W/O SOCKET
•
MATERIAL: STEEL BULB
•
BULB QUANTITY: 1
•
CASE TYPE: DUSTPROOF AND VAPORPROOF
TECHNICAL CHARACTERISTICS
ACTUATING MEDIUMMETHYL CHLORIDE
SCALE SMALLEST INCREMENT10.0 DEG FAHRENHEIT
SCALE INSCRIPTION/BACKGROUND COLORWHITE MARKINGS ON BLACK
STYLE DESIGNATORBULB W/O SOCKET
MATERIALSTEEL BULB
MATERIALSTEEL METER CASE
BULB QUANTITY1
CASE TYPEDUSTPROOF AND VAPORPROOF
SCALE TYPECONCENTRIC DIAL
POINTER/PEN TYPE AND QUANTITY1 INDICATING SINGLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
FE4InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
657740InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
YE4InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
EInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MIL-M-3800InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MIL-C-62/3InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MODEL 91?
MODEL 91 is a MODEL 91.
What parts can replace MODEL 91?
There are 24 known substitutes for MODEL 91: FE4, 657740, YE4 and 21 more. Substitute compatibility should be verified for your specific system.
Is MODEL 91 still available?
MODEL 91 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026