PartsTable
Technical Data Sheet
18-8-3 ✓ 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

Flat fold disposable P3 respirator offering reliable, effective protection against solid and non-volatile liquid particles. CE approved to the Medical Device and PPE Directives.<br>Low breathing resistance filter technology for easier breathing through your shift.<br>Ingenious 3-panel design that accommodates greater facial movement during speech so much more comfortable to wear.<br>An embossed top panel to reduce fogging of eyewear<br><br>Get FFP3 protection against hazardous airborne micro-organisms, as well as solid and non-volatile liquid particles, with 3M™ Aura™ Particulate Respirator 1883+. Designed using low breathing resistance filter technology, our shrouded valve respirator offers the protection of both a respirator and a splash-resistant surgical mask, for easier breathing throughout your shift.

The 3-panel design allows for greater facial movement, while the sculpted nose panel conforms to the contours of the face, creating an effective seal. The shrouded 3M™ Cool Flow™ Ex This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-021-8570, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
18-8-3
NSN: 5310-00-021-8570
FSC: 5310
CAGE: 33313 — KENTUCKY MFG CO (USA)
SPECIFICATIONS
materialPLASTIC OVERALL
end_styleSPRING END,SQUARED AND GROUND BOTH ENDS
nasal_tipNOT PROVIDED
nut_styleSQUARE
body_shapeOVAL
body_styleWEBBED, OFFSET, SOLID
bore_styleSTRAIGHT SPLINE BOTH ENDS
link_styleCENTER GUIDE
nut_height0.625 INCHES NOMINAL IN
ring_styleCONCENTRIC
teeth_typeSINGLE HELIX
tooth_formSTANDARD
NSN5310-00-021-8570
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 18-8-3 · 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
WIDTH ACROSS FLATS: 0.750 INCHES NOMINAL IN
NUT STYLE: HEXAGON
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
THREAD SERIES: UNF
THREAD QUANTITY PER INCH: 20
NOMINAL THREAD SIZE: 0.437 INCHES IN
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
DEPARTURE FROM CITED DOCUMENT: AS MODIFIED BY HGT
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH ACROSS FLATS0.750 INCHES NOMINAL IN
NUT STYLEHEXAGON
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
THREAD SERIESUNF
THREAD QUANTITY PER INCH20
NOMINAL THREAD SIZE0.437 INCHES IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY HGT
NONDEFINITIVE SPEC/STD DATAA TYPE
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
FFH111-1212Interchangeable
interchangeable cross-reference
interchangeable
2904Interchangeable
interchangeable cross-reference
interchangeable
FF-H-111Interchangeable
interchangeable cross-reference
interchangeable
W-F-408-1-2-L-1-03-SInterchangeable
interchangeable cross-reference
interchangeable
5321Interchangeable
interchangeable cross-reference
interchangeable
NAS290-4ANG25Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 18-8-3?
18-8-3 is a COIL,RADIO FREQUENCY manufactured by 3M.
What parts can replace 18-8-3?
There are 31 known substitutes for 18-8-3: FFH111-1212, 2904, FF-H-111 and 28 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 18-8-3?
18-8-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-021-8570. This indicates validated use in U.S. government and defense supply chains.
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