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66743 — TERMINAL,LUG

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

66743: TERMINAL,LUG.

The TERMINAL,LUG is a the manufacturer industrial component. Key specifications include material: STEEL COMP 201 BAND, head_style: HEADLESS (SETSCREW), point_style: CUP, temp_rating: 250.0 FAHRENHEIT DEGF, thread_class: 3A A, overall_width: 0.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-117-4788, 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
66743
NSN: 5310-00-117-4788
NIINs: 001174788, 008289647, 009299219, 014735537
FSC: 5310 — Nuts and Washers
CAGE: 79807 — WROUGHT WASHER MFG., INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 201 BAND
head_styleHEADLESS (SETSCREW)
point_styleCUP
temp_rating250.0 FAHRENHEIT DEGF
thread_class3A A
overall_width0.750 INCHES NOMINAL IN
thread_length0.250 INCHES MAXIMUM IN
overall_length0.781 INCHES IN
fastener_length0.250 INCHES NOMINAL IN
hardness_rating33.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
inside_diameter2.690 INCHES MINIMUM AND 2.930 INCHES MAXIMUM IN
locking_featurePATCH OR PELLET OR STRIP THREADS
NSN5310-00-117-4788
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 66743 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES 6
5M-2894Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
9Y5710 ITEM 16Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
IPD5M2894Reference document
Same NSN cross-reference
Reference document — Secondary reference
10384130Reference document
Same NSN cross-reference
Reference document — Informative reference only
6063Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
110379AReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 66743?
66743 is a TERMINAL,LUG.
What parts can replace 66743?
There are 6 known substitutes for 66743: 5M-2894, 9Y5710 ITEM 16, IPD5M2894 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 66743?
66743 is cataloged in the U.S. Government catalog under NSN 5310-00-117-4788. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.