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PartsTable / COMPONENT / 404 105
404 105 ✓ Verified by PartsTable
3M · 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 PLUG,PISTON ACCUM is a 3M industrial component. Key specifications include material: STEEL OVERALL, nut_style: CASTELLATED, HEXAGON, nut_height: 0.562 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNF, special_features: SPECIALLY SELECTED FOR FBM APPLICATIONPEP OP 2747. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-812-7766, 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
404 105
NSN: 5310-00-812-7766
FSC: 5310
CAGE: 77294 — PIPER INDUSTRIAL MANUFACTURING COMPANY, LLC DIV PIPER INDUSTRIAL MANUFACTURING COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleCASTELLATED, HEXAGON
nut_height0.562 INCHES NOMINAL IN
thread_class3B
thread_seriesUNF
special_featuresSPECIALLY SELECTED FOR FBM APPLICATIONPEP OP 2747
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_across_flats0.738 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
nominal_thread_size0.500 INCHES IN
bearing_surface_typeFLAT OR WASHER FACED
thread_quantity_per_inch20
NSN5310-00-812-7766
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 404 105 · 3M ⚠ 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
•
NUT STYLE: CASTELLATED, HEXAGON
•
WIDTH ACROSS FLATS: 0.738 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
DEPARTURE FROM CITED DOCUMENT: AS MODIFIED BY SPECIAL FEATURES
•
MATERIAL: STEEL OVERALL
•
THREAD SERIES: UNF
•
THREAD QUANTITY PER INCH: 20
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLECASTELLATED, HEXAGON
WIDTH ACROSS FLATS0.738 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY SPECIAL FEATURES
MATERIALSTEEL OVERALL
THREAD SERIESUNF
THREAD QUANTITY PER INCH20
THREAD CLASS3B
SPECIAL FEATURESSPECIALLY SELECTED FOR FBM APPLICATIONPEP OP 2747
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
10087996Interchangeable
interchangeable cross-reference
interchangeable
FFN836GPBTYPE1STYLE4Interchangeable
interchangeable cross-reference
interchangeable
5310PL0145314Interchangeable
interchangeable cross-reference
interchangeable
404105Interchangeable
interchangeable cross-reference
interchangeable
A72523-201Interchangeable
interchangeable cross-reference
interchangeable
AN310-8Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 404 105?
404 105 is a PLUG,PISTON ACCUM manufactured by 3M.
What parts can replace 404 105?
There are 6 known substitutes for 404 105: 10087996, FFN836GPBTYPE1STYLE4, 5310PL0145314 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 404 105?
404 105 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-812-7766. 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