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Technical Data Sheet

401/420 — CABLE ASSEMBLY,RIBBON,ELECTRICAL

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

401/420: CABLE ASSEMBLY,RIBBON,ELECTRICAL.

CABLE ASSEMBLY,RIBBON,ELECTRICAL. Key specifications include material: COPPER CORE CONDUCTOR ALL CONDUCTORS, head_style: HEXAGON, leg_length: 3.250 INCHES NOMINAL SECOND END IN, grip_length: 3.437 INCHES NOMINAL IN, head_height: 0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN, thread_class: 3A A. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-261-7386, 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
401/420
NSN: 5310-00-261-7386
NIINs: 002617386, 005585827, 005903246, 006279760, 011946815, 014991290, 016322992
FSC: 5310 — Nuts and Washers
CAGE: 78189 — ITW SHAKEPROOF AUTOMOTIVE PRODUCTS (USA)
SPECIFICATIONS
materialCOPPER CORE CONDUCTOR ALL CONDUCTORS
head_styleHEXAGON
leg_length3.250 INCHES NOMINAL SECOND END IN
grip_length3.437 INCHES NOMINAL IN
head_height0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
thread_class3A A
hole_diameter0.256 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
thread_length0.641 INCHES MINIMUM IN
conductor_formSTRANDED ALL CONDUCTORS
connection_typeUNTHREADED INTERNAL PIPE ALL ENDS
fastener_length4.078 INCHES NOMINAL IN
hardness_rating32.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL
NSN5310-00-261-7386
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 401/420 · 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
•
STYLE DESIGNATOR: FLAT EXTERNAL AND INTERNAL TEETH
•
OUTSIDE DIAMETER: 0.680 INCHES MINIMUM AND 0.695 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.035 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 0.256 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
TYPICAL APPLICATIONS
  • Server Internal Cabling
  • Data Center Cable Infrastructure
  • SAS/SATA Drive Connectivity
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORFLAT EXTERNAL AND INTERNAL TEETH
OUTSIDE DIAMETER0.680 INCHES MINIMUM AND 0.695 INCHES MAXIMUM IN
MATERIAL THICKNESS0.035 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
HOLE DIAMETER0.256 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 401/420?
401/420 is a CABLE ASSEMBLY,RIBBON,ELECTRICAL.
What is the NSN for 401/420?
401/420 is cataloged in the U.S. Government catalog under NSN 5310-00-261-7386. This indicates validated use in U.S. government and defense supply chains.
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