PartsTable
Technical Data Sheet
66D-10 ✓ Verified by PartsTable
· NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON LOCKING INSERT, nut_style: HEXAGON, nut_height: 0.376 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF, thread_class: 2B, thread_series: UNF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-628-3860, 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
66D-10
NSN: 5310-00-628-3860
FSC: 5310
CAGE: 89749 — CLARK MATERIAL HANDLING COMPANY (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON LOCKING INSERT
nut_styleHEXAGON
nut_height0.376 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class2B
thread_seriesUNF
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
width_across_flats0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
nominal_thread_size0.625 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch18
NSN5310-00-628-3860
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 66D-10 · 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
KEY FEATURES
NUT HEIGHT: 0.376 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
BEARING SURFACE TYPE: CHAMFERED
NOMINAL THREAD SIZE: 0.625 INCHES IN
WIDTH ACROSS FLATS: 0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
TEMP RATING: 250.0 FAHRENHEIT NOMINAL DEGF
THREAD DIRECTION: RIGHT-HAND
NUT STYLE: HEXAGON
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS (FLIS)
NUT HEIGHT0.376 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
BEARING SURFACE TYPECHAMFERED
NOMINAL THREAD SIZE0.625 INCHES IN
WIDTH ACROSS FLATS0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
THREAD DIRECTIONRIGHT-HAND
NUT STYLEHEXAGON
THREAD CLASS2B
THREAD SERIESUNF
MATERIALSTEEL NUT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
MS21083-N10Interchangeable
interchangeable cross-reference
interchangeable
MS21044-N10Interchangeable
interchangeable cross-reference
interchangeable
LL-HX4-7891Interchangeable
interchangeable cross-reference
interchangeable
29NTE-108Interchangeable
interchangeable cross-reference
interchangeable
CK1-29NTE-108Interchangeable
interchangeable cross-reference
interchangeable
01-435-0212-5PC84Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 66D-10?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 66D-10?
66D-10 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 66D-10?
There are 9 known substitutes for 66D-10: MS21083-N10, MS21044-N10, LL-HX4-7891 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 66D-10?
66D-10 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-628-3860. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 66D-10