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Technical Data Sheet
PartsTable / COMPONENT / 1B8709
1B8709 ✓ 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 4130 OR STEEL COMP 8630 OVERALL, thickness: 0.1563 INCHES MINIMUM AND 0.1573 INCHES MAXIMUM IN, key_height: 0.370 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN, circle_diameter: 0.865 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN, hardness_rating: 38.0 ROCKWELL C MINIMUM AND 45.0 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 5315-00-011-4813, 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
1B8709
NSN: 5315-00-011-4813
FSC: 5315
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OR STEEL COMP 8630 OVERALL
thickness0.1563 INCHES MINIMUM AND 0.1573 INCHES MAXIMUM IN
key_height0.370 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
circle_diameter0.865 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
hardness_rating38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
style_designatorROUND BOTTOM
starting_edge_shapeSTRAIGHT
key_size_designationWOODRUFF 10
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES OVERALL
NSN5315-00-011-4813
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1B8709 · 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
•
THICKNESS: 0.156 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
•
CIRCLE DIAMETER: 0.865 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
•
STARTING EDGE RADIUS: 0.010 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
•
STARTING EDGE SHAPE: ROUND
•
STYLE DESIGNATOR: ROUND BOTTOM
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
KEY SIZE DESIGNATION: WOODRUFF 10
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THICKNESS0.156 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
CIRCLE DIAMETER0.865 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
STARTING EDGE RADIUS0.010 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
STARTING EDGE SHAPEROUND
STYLE DESIGNATORROUND BOTTOM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
KEY SIZE DESIGNATIONWOODRUFF 10
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
MATERIALSTEEL OVERALL
KEY HEIGHT0.370 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
S-1021Interchangeable
interchangeable cross-reference
interchangeable
AA300-128-1CW 5/16BORE/STEELInterchangeable
interchangeable cross-reference
interchangeable
M-1965Interchangeable
interchangeable cross-reference
interchangeable
114813Interchangeable
interchangeable cross-reference
interchangeable
945827Interchangeable
interchangeable cross-reference
interchangeable
25501-5SInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1B8709?
1B8709 is a KEY,WOODRUFF.
What parts can replace 1B8709?
There are 16 known substitutes for 1B8709: S-1021, AA300-128-1CW 5/16BORE/STEEL, M-1965 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1B8709?
1B8709 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-011-4813. 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