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A3809 ✓ 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

TERMINAL JUNCTION BLOCK,SECTIONA. Key specifications include material: FIBER AND RUBBER BODY, duty_type: CONTINUOUS, shell_length: 7.479 FEET FT, thread_class: 2A SINGLE MOUNTING FACILITY A, hole_diameter: 0.310 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN, overall_width: 1.500 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-065-4512, 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
A3809
NSN: 5310-00-065-4512
FSC: 5310
CAGE: 86928 — SEASTROM MANUFACTURING CO INC (USA)
SPECIFICATIONS
materialFIBER AND RUBBER BODY
duty_typeCONTINUOUS
shell_length7.479 FEET FT
thread_class2A SINGLE MOUNTING FACILITY A
coil_quantity1
hole_diameter0.310 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN
overall_width1.500 INCHES NOMINAL IN
overall_height2.840 INCHES NOMINAL IN
overall_length1.500 INCHES NOMINAL IN
outside_diameter0.518 INCHES MINIMUM AND 0.538 INCHES MAXIMUM IN
performance_typeSTANDARD CAPACITY
special_featuresDOUBLE SCREW TYPE TERMINALS
NSN5310-00-065-4512
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A3809 · 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
•
OVERALL DISTANCE INCLUDING KEYS: 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.099 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
•
EXTERNAL KEY QUANTITY: 12
•
STYLE DESIGNATOR: KEY
•
OUTSIDE DIAMETER: 0.518 INCHES MINIMUM AND 0.538 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 302 OVERALL
•
HOLE DIAMETER: 0.310 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD 1ST MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL DISTANCE INCLUDING KEYS0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
EXTERNAL STRAIGHT KEY WIDTH0.099 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY12
STYLE DESIGNATORKEY
OUTSIDE DIAMETER0.518 INCHES MINIMUM AND 0.538 INCHES MAXIMUM IN
MATERIALSTEEL COMP 302 OVERALL
HOLE DIAMETER0.310 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD 1ST MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
DFX2007-5LInterchangeable
interchangeable cross-reference
interchangeable
A3809Interchangeable
interchangeable cross-reference
interchangeable
100119-002Interchangeable
interchangeable cross-reference
interchangeable
247-1014P8Interchangeable
interchangeable cross-reference
interchangeable
3809Interchangeable
interchangeable cross-reference
interchangeable
772719C91Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A3809?
A3809 is a TERMINAL JUNCTION BLOCK,SECTIONA.
What parts can replace A3809?
There are 8 known substitutes for A3809: DFX2007-5L, A3809, 100119-002 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A3809?
A3809 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-065-4512. 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