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PartsTable / COMPONENT / 1B8704
1B8704 ✓ 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 KEY,WOODRUFF is a the manufacturer industrial component. Key specifications include material: STEEL COMP 2330 OR STEEL COMP 4130 OR STEEL COMP 8630 OVERALL, thickness: 0.1250 INCHES MINIMUM AND 0.1260 INCHES MAXIMUM IN, key_height: 0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, circle_diameter: 0.615 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN, hardness_rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL, style_designator: ROUND BOTTOM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-074-3573, 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
1B8704
NSN: 5315-00-074-3573
FSC: 5315
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL COMP 2330 OR STEEL COMP 4130 OR STEEL COMP 8630 OVERALL
thickness0.1250 INCHES MINIMUM AND 0.1260 INCHES MAXIMUM IN
key_height0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
circle_diameter0.615 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
style_designatorROUND BOTTOM
starting_edge_shapeSTRAIGHT
key_size_designationWOODRUFF 5
NSN5315-00-074-3573
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1B8704 · 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
•
MATERIAL: STEEL OVERALL
•
KEY SIZE DESIGNATION: WOODRUFF 5
•
STYLE DESIGNATOR: ROUND BOTTOM
•
STARTING EDGE SHAPE: STRAIGHT
•
THICKNESS: 0.125 INCHES NOMINAL IN
•
KEY HEIGHT: 0.250 INCHES NOMINAL IN
•
CIRCLE DIAMETER: 0.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
KEY SIZE DESIGNATIONWOODRUFF 5
STYLE DESIGNATORROUND BOTTOM
STARTING EDGE SHAPESTRAIGHT
THICKNESS0.125 INCHES NOMINAL IN
KEY HEIGHT0.250 INCHES NOMINAL IN
CIRCLE DIAMETER0.625 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
70005Interchangeable
interchangeable cross-reference
interchangeable
X43-3Interchangeable
interchangeable cross-reference
interchangeable
103905Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1B8704?
1B8704 is a KEY,WOODRUFF.
What parts can replace 1B8704?
There are 3 known substitutes for 1B8704: 70005, X43-3, 103905. Substitute compatibility should be verified for your specific system.
What is the NSN for 1B8704?
1B8704 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-074-3573. 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