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PartsTable / COMPONENT / 2Q1SZ27
2Q1SZ27 ✓ 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 OVERALL, thickness: 0.218 INCHES MINIMUM AND 0.219 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: 10.0 ROCKWELL C MINIMUM 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 5315-00-011-7976, 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
2Q1SZ27
NSN: 5315-00-011-7976
FSC: 5315
CAGE: 76040 — MACK TRUCKS INC PARTS OPN (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.218 INCHES MINIMUM AND 0.219 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_rating10.0 ROCKWELL C MINIMUM OVERALL
style_designatorROUND BOTTOM
starting_edge_shapeSTRAIGHT
key_size_designationWOODRUFF 12
material_document_and_classificationQQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-011-7976
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2Q1SZ27 · 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
•
KEY SIZE DESIGNATION: WOODRUFF 12
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THICKNESS: 0.218 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
KEY HEIGHT: 0.370 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
•
HARDNESS RATING: 10.0 ROCKWELL C MINIMUM OVERALL
•
STARTING EDGE SHAPE: STRAIGHT
•
STYLE DESIGNATOR: ROUND BOTTOM
TECHNICAL CHARACTERISTICS (FLIS)
KEY SIZE DESIGNATIONWOODRUFF 12
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THICKNESS0.218 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
KEY HEIGHT0.370 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
HARDNESS RATING10.0 ROCKWELL C MINIMUM OVERALL
STARTING EDGE SHAPESTRAIGHT
STYLE DESIGNATORROUND BOTTOM
CIRCLE DIAMETER0.865 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
11797-06Interchangeable
interchangeable cross-reference
interchangeable
11797-6Interchangeable
interchangeable cross-reference
interchangeable
MS28775-224Interchangeable
interchangeable cross-reference
interchangeable
230079114Interchangeable
interchangeable cross-reference
interchangeable
5330006413407Interchangeable
interchangeable cross-reference
interchangeable
84110Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2Q1SZ27?
2Q1SZ27 is a KEY,WOODRUFF.
What parts can replace 2Q1SZ27?
There are 24 known substitutes for 2Q1SZ27: 11797-06, 11797-6, MS28775-224 and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2Q1SZ27?
2Q1SZ27 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-011-7976. 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