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Technical Data Sheet
PartsTable / COMPONENT / D27111
D27111 ✓ 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 WASHER,LOCK is a the manufacturer industrial component. Key specifications include hole_diameter: 0.636 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN, hardness_rating: 35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM, outside_diameter: 1.082 INCHES NOMINAL IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.126 INCHES MINIMUM AND 0.136 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-543-5756, 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
D27111
NSN: 5310-00-543-5756
FSC: 5310
CAGE: 23926 — KOMATSU AMERICA CORPORATION (USA)
SPECIFICATIONS
hole_diameter0.636 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN
hardness_rating35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
outside_diameter1.082 INCHES NOMINAL IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentPASSIVATE OVERALL
material_thickness0.126 INCHES MINIMUM AND 0.136 INCHES MAXIMUM IN
nondefinitive_spec/std_data1 STYLE AND B OR C CLASS
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-543-5756
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: D27111 · 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
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 1 STYLE AND B OR C CLASS
•
MATERIAL THICKNESS: 0.126 INCHES MINIMUM AND 0.136 INCHES MAXIMUM IN
•
HARDNESS RATING: 35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
•
OUTSIDE DIAMETER: 1.082 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.636 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
SURFACE TREATMENTPASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NONDEFINITIVE SPEC/STD DATA1 STYLE AND B OR C CLASS
MATERIAL THICKNESS0.126 INCHES MINIMUM AND 0.136 INCHES MAXIMUM IN
HARDNESS RATING35.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
OUTSIDE DIAMETER1.082 INCHES NOMINAL IN
HOLE DIAMETER0.636 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
187174Interchangeable
interchangeable cross-reference
interchangeable
MS35338-86Interchangeable
interchangeable cross-reference
interchangeable
FFW84CLASSBSTYLE2Interchangeable
interchangeable cross-reference
interchangeable
27111Interchangeable
interchangeable cross-reference
interchangeable
MHLS3MSInterchangeable
interchangeable cross-reference
interchangeable
9167216Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D27111?
D27111 is a WASHER,LOCK.
What parts can replace D27111?
There are 15 known substitutes for D27111: 187174, MS35338-86, FFW84CLASSBSTYLE2 and 12 more. Substitute compatibility should be verified for your specific system.
Is D27111 still available?
D27111 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026