PartsTable TECHNICAL DATA SHEET

JULY 2026Technical Data Sheet

6651Thermocouple,contact

Name: 6651
SKU: 6685-01-135-4357

Unison Industries Llc · NSN 6685-01-135-4357 · FSC 6685 · No Item Name Available

Verified by PartsTable

NSN 6685-01-135-4357 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-135-4357. Primary manufacturer part number: 6651.

6685-01-135-4357 — No Item Name Available illustration

Features

Thermocouple,contact — FSC 6685
Unit Type: PROTECTIVE TUBE
Accommodated Wire Awg Size: 24
Terminal Type and Quantity: 2 THREADED STUD
Material: STEEL CORROSION RESISTING OVERALL
4 verified cross-references
Primary manufacturer: Unison Industries Llc

Applications

Applications requiring Steel Corrosion Resisting Overall construction

General Description

The Thermocouple,contact, cataloged under National Stock Number 6685-01-135-4357, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Unison Industries Llc. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	6685-01-135-4357
Primary Part Number	6651
Item Name	Thermocouple,contact
FSC / FSG	6685 / 66 — No Item Name Available
Manufacturer	Unison Industries Llc
Status	ACTIVE
Unit Type	PROTECTIVE TUBE
Accommodated Wire Awg Size	24
Terminal Type and Quantity	2 THREADED STUD
Material	STEEL CORROSION RESISTING OVERALL

Lifecycle & Compliance

Acquisition Status	ACTIVE
HAZMAT	No

⇄ Verified Substitutes 11

5133-00-084-434841-11048 INTERCHANGEABLE

Drill,twist

Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039

5970-00-224-5227 INTERCHANGEABLE

Insulator,knob

4720-00-319-1229 INTERCHANGEABLE

Hose Assembly,nonmetallic

4820-00-758-7156665-1 INTERCHANGEABLE

Valve,check

Admiral Valve Llc Dba Cpv Manufacturing

3110-00-885-98724357 INTERCHANGEABLE

Bearing,roller,tapered

Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor

5940-00-937-821812752B-4 INTERCHANGEABLE

Terminal,stud

Staffall, Inc. Dba Staffall Inc

6530-01-133-41826051 INTERCHANGEABLE

Drape,surgical

Solventum Us Llc

4820-01-151-39256651 INTERCHANGEABLE

Cap,valve

Imi Cash Valve Inc

6530-01-199-19897000042934 INTERCHANGEABLE

Drape,surgical

Solventum Us Llc

8415-01-667-56066651 INTERCHANGEABLE

Glove,shooter's

Hatch Corp Ltd

Cross-Reference Index

Part Number	Manufacturer
6896296	Rolls-Royce Corporation (USA)
6651	Unison Industries, Llc Dba Unison Industries Inc (USA)
6651 PRIMARY	Unison Industries Llc (USA)
6896296	Allison Transmission Inc Dba Allison Transmission, Inc (USA)

Related Parts

5133-00-084-4348INTERCHANGEABLE

DRILL,TWIST

41-11048

5970-00-224-5227INTERCHANGEABLE

INSULATOR,KNOB

4720-00-319-1229INTERCHANGEABLE

HOSE ASSEMBLY,NONMETALLIC

4820-00-758-7156INTERCHANGEABLE

VALVE,CHECK

665-1

3110-00-885-9872INTERCHANGEABLE

BEARING,ROLLER,TAPERED

4357

5940-00-937-8218INTERCHANGEABLE

TERMINAL,STUD

12752B-4

6530-01-133-4182INTERCHANGEABLE

DRAPE,SURGICAL

6051

4820-01-151-3925INTERCHANGEABLE

CAP,VALVE

6651

6530-01-199-1989INTERCHANGEABLE

DRAPE,SURGICAL

7000042934

8415-01-667-5606INTERCHANGEABLE

GLOVE,SHOOTER'S

6651

5340-01-707-1814INTERCHANGEABLE

DEFLECTOR,DIRT AND LIQUID

6651

Frequently Asked Questions

What is NSN 6685-01-135-4357?

NSN 6685-01-135-4357 is a Thermocouple,contact, manufactured by Unison Industries Llc, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-135-4357?

NSN 6685-01-135-4357 has 4 cross-referenced part numbers: 6896296 (Rolls-Royce Corporation), 6651 (Unison Industries, Llc Dba Unison Industries Inc), 6651 (Unison Industries Llc), 6896296 (Allison Transmission Inc Dba Allison Transmission, Inc).

What NSN replaces 6685-01-135-4357?

There are 11 known substitutes for 6685-01-135-4357: 5133-00-084-4348, 5970-00-224-5227, 4720-00-319-1229 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6651?

Key specifications for 6651: Unit Type: PROTECTIVE TUBE; Accommodated Wire Awg Size: 24; End Item Identification: VEHICLE,AIRCRAFT REFUELER R-9; Terminal Type and Quantity: 2 THREADED STUD. 5 total characteristics are documented in the Federal Logistics Information System.

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

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