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Technical Data Sheet
PartsTable / COMPONENT / 40D88
40D88 ✓ 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 NUT,PLAIN,KNURLED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, nut_style: KNURLED, knurl_width: 0.188 INCHES NOMINAL IN, nut_diameter: 1.000 INCHES NOMINAL IN, thread_class: 2B, nut_thickness: 0.688 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-883-9512, 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
40D88
NSN: 5310-00-883-9512
FSC: 5310
CAGE: 29964 — ALLIED DEVICES CORP DBA ABSOLUTE PRECISION CO (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
nut_styleKNURLED
knurl_width0.188 INCHES NOMINAL IN
nut_diameter1.000 INCHES NOMINAL IN
thread_class2B
nut_thickness0.688 INCHES NOMINAL IN
thread_seriesUNF
thread_directionRIGHT-HAND
small_end_diameter0.375 INCHES NOMINAL IN
nominal_thread_size0.190 INCHES IN
counterbore_diameter0.203 INCHES NOMINAL NUT IN
nut_counterbore_depth0.250 INCHES NOMINAL NUT IN
NSN5310-00-883-9512
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 40D88 · 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
•
THREAD DIRECTION: RIGHT-HAND
•
NUT STYLE: KNURLED
•
NUT COUNTERBORE DEPTH: 0.250 INCHES NOMINAL NUT IN
•
THREAD SERIES: UNF
•
THREAD QUANTITY PER INCH: 32
•
NUT DIAMETER: 1.000 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.190 INCHES IN
•
MATERIAL: STEEL COMP 303 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
NUT STYLEKNURLED
NUT COUNTERBORE DEPTH0.250 INCHES NOMINAL NUT IN
THREAD SERIESUNF
THREAD QUANTITY PER INCH32
NUT DIAMETER1.000 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.190 INCHES IN
MATERIALSTEEL COMP 303 OVERALL
SMALL END DIAMETER0.375 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
684364Interchangeable
interchangeable cross-reference
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769XR1Interchangeable
interchangeable cross-reference
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7349110Interchangeable
interchangeable cross-reference
interchangeable
13218E4088Interchangeable
interchangeable cross-reference
interchangeable
4088Interchangeable
interchangeable cross-reference
interchangeable
33873Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40D88?
40D88 is a NUT,PLAIN,KNURLED.
What parts can replace 40D88?
There are 15 known substitutes for 40D88: 684364, 769XR1, 7349110 and 12 more. Substitute compatibility should be verified for your specific system.
Is 40D88 still available?
40D88 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