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Technical Data Sheet
PartsTable / COMPONENT / 415670
415670 ✓ 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 BLOCK,TACKLE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC), hardness_rating: 33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM, special_features: USED TO CHANGE THE DIRECTION OF A WIRE ROPE 90 DEGREES; SOCKET ENDS WITH SET SCREWS FOR 1/2 INCH CONDUIT IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-548-1269, 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
415670
NSN: 5310-01-548-1269
FSC: 5310
CAGE: 05448 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV HYDRAULIC PUMP AND POWER DIVISION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
hardness_rating33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM
special_featuresUSED TO CHANGE THE DIRECTION OF A WIRE ROPE 90 DEGREES; SOCKET ENDS WITH SET SCREWS FOR 1/2 INCH CONDUIT IN
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
nominal_thread_size0.250 INCHES IN
bearing_surface_typeCHAMFERED
end_item_identification2320-01-380-8604, TRUCK,UTILITY TRUCK, VEHICLE SYSTEM, 1 1/4 TON HMMWV; MRAP - COUGAR TOW; MULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
thread_quantity_per_inch20
NSN5310-01-548-1269
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 415670 · 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
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
THREAD CLASS: 3B
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT: ZINC OVERALL
•
SPECIFICATION/STANDARD DATA: 81349 - MIL-DTL-45913/4A GOVERNMENT SPECIFICATION A
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE J995, GRADE 8 NATIONAL STD/SPEC ALL MATERIAL RESPONSES OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B633, TYPE II, FE/ZN 8 ASSN STD ALL TREATMENT RESPONSES OVERALL
•
HARDNESS RATING: 33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.250 INCHES IN
THREAD CLASS3B
MATERIALSTEEL OVERALL
SURFACE TREATMENTZINC OVERALL
SPECIFICATION/STANDARD DATA81349 - MIL-DTL-45913/4A GOVERNMENT SPECIFICATION A
MATERIAL DOCUMENT AND CLASSIFICATIONSAE J995, GRADE 8 NATIONAL STD/SPEC ALL MATERIAL RESPONSES OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B633, TYPE II, FE/ZN 8 ASSN STD ALL TREATMENT RESPONSES OVERALL
HARDNESS RATING33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
MS51943-4Interchangeable
interchangeable cross-reference
interchangeable
5310PL0918864Interchangeable
interchangeable cross-reference
interchangeable
M45913/3-5FG8PInterchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-45913Interchangeable
interchangeable cross-reference
interchangeable
MS51943-57Interchangeable
interchangeable cross-reference
interchangeable
M45913/3-24FG8CInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 415670?
415670 is a BLOCK,TACKLE.
What parts can replace 415670?
There are 22 known substitutes for 415670: MS51943-4, 5310PL0918864, M45913/3-5FG8P and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 415670?
415670 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-548-1269. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026