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PartsTable / COMPONENT / PD-110
PD-110 ✓ 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

PLUG,PROTECTIVE,DUST AND MOISTUR. Key specifications include material: PLASTIC, POLYETHYLENE (PP), nut_style: KNURLED, design_type: THREADED, knurl_width: 0.125 INCHES NOMINAL IN, nut_diameter: 0.500 INCHES NOMINAL IN, thread_class: 2B. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-421-1193, 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
PD-110
NSN: 5310-00-421-1193
FSC: 5310
CAGE: 29440 — W. M. BERG, INC. (USA)
SPECIFICATIONS
materialPLASTIC, POLYETHYLENE (PP)
nut_styleKNURLED
design_typeTHREADED
knurl_width0.125 INCHES NOMINAL IN
nut_diameter0.500 INCHES NOMINAL IN
thread_class2B
nut_thickness0.625 INCHES NOMINAL IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
small_end_length0.500 INCHES NOMINAL IN
special_featuresFOR FLARED JIC FITTINGS, TO FIT THREAD SIZE 1-12 INCHES IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
NSN5310-00-421-1193
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: PD-110 · 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
•
SMALL END LENGTH: 0.500 INCHES NOMINAL IN
•
SMALL END DIAMETER: 0.312 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-764,COND A/A FED SPEC ALL MATERIAL RESPONSES OVERALL
•
COUNTERBORE DIAMETER: 0.180 INCHES NOMINAL NUT IN
•
NUT THICKNESS: 0.625 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-F-14072,E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
NUT STYLE: KNURLED
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS (FLIS)
SMALL END LENGTH0.500 INCHES NOMINAL IN
SMALL END DIAMETER0.312 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764,COND A/A FED SPEC ALL MATERIAL RESPONSES OVERALL
COUNTERBORE DIAMETER0.180 INCHES NOMINAL NUT IN
NUT THICKNESS0.625 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-14072,E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NUT STYLEKNURLED
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
SURFACE TREATMENTPASSIVATE OVERALL
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
PA6080Interchangeable
interchangeable cross-reference
interchangeable
AMS-QQ-A-200/3Interchangeable
interchangeable cross-reference
interchangeable
2-218Interchangeable
interchangeable cross-reference
interchangeable
CA668Interchangeable
interchangeable cross-reference
interchangeable
28461Interchangeable
interchangeable cross-reference
interchangeable
683963Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PD-110?
PD-110 is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What parts can replace PD-110?
There are 19 known substitutes for PD-110: PA6080, AMS-QQ-A-200/3, 2-218 and 16 more. Substitute compatibility should be verified for your specific system.
Is PD-110 still available?
PD-110 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