PartsTable
Technical Data Sheet
A671-3 ✓ 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

SOCKET,PLUG-IN ELECTRONIC COMPON. Key specifications include material: COPPER ALLOY OVERALL, face_width: 1.120 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN, hole_diameter: 0.512 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN, overall_width: 0.625 INCHES NOMINAL IN, overall_height: 0.600 INCHES NOMINAL IN, overall_length: 1.535 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-042-4229, 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
A671-3
NSN: 5310-00-042-4229
FSC: 5310
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
face_width1.120 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
hole_diameter0.512 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN
overall_width0.625 INCHES NOMINAL IN
overall_height0.600 INCHES NOMINAL IN
overall_length1.535 INCHES NOMINAL IN
outside_diameter1.548 INCHES MINIMUM AND 1.550 INCHES MAXIMUM IN
special_featuresREED RELAY 1;15 OHM RESISTOR 1;TWO 0.136 IN. DIA MTG HOLES OM 1.240 IN. MTG CNTRS;EPOXY ENCAPSULATED,HERMETICALLY SEALED REED SWITCH;USED TO OPERATE A VISUAL CALL CAMP IN
style_designatorPLAIN
material_thickness0.037 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
bore_inside_diameter0.500 INCHES MINIMUM AND 0.501 INCHES MAXIMUM IN
casehardening_indicatorNOT CASEHARDENED
NSN5310-00-042-4229
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A671-3 · 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
MATERIAL: COPPER ALLOY OVERALL
MATERIAL THICKNESS: 0.037 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
HOLE DIAMETER: 0.512 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN
OUTSIDE DIAMETER: 0.867 INCHES MINIMUM AND 0.900 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATA: A TYPE
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-746 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATOR: FLAT INTERNAL TEETH
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY OVERALL
MATERIAL THICKNESS0.037 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
HOLE DIAMETER0.512 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.867 INCHES MINIMUM AND 0.900 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATAA TYPE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-746 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORFLAT INTERNAL TEETH
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
2155Interchangeable
interchangeable cross-reference
interchangeable
1617823Interchangeable
interchangeable cross-reference
interchangeable
BUWEPSDWG1617823Interchangeable
interchangeable cross-reference
interchangeable
MS35333-110Interchangeable
interchangeable cross-reference
interchangeable
MILW6986TYPEAInterchangeable
interchangeable cross-reference
interchangeable
FF-W-100CInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A671-3?
A671-3 is a SOCKET,PLUG-IN ELECTRONIC COMPON.
What parts can replace A671-3?
There are 21 known substitutes for A671-3: 2155, 1617823, BUWEPSDWG1617823 and 18 more. Substitute compatibility should be verified for your specific system.
Is A671-3 still available?
A671-3 is currently cancelled.
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