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238-11 — Technical Data Sheet

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— · 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

STRAP,WRIST,ELECTROSTATIC DISCHA. Key specifications include material: STEEL OVERALL, body_style: ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACEROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE, head_style: FLAT FILLISTER, scale_name: PRESSURE, scale_type: SINGLE, head_height: 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5310-00-550-0658, 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
238-11
NSN: 5310-00-550-0658
FSC: 5310
CAGE: 82340 — L3HARRIS TECHNOLOGIES, INC. DIV SPACE AND AIRBORNE SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_styleROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACEROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE
head_styleFLAT FILLISTER
scale_namePRESSURE
scale_typeSINGLE
head_height0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
scale_range+0.0 TO 15.0 POUNDS PRESSURE PER SQUARE INCH LBS
pointer_typeINDICATING
power_rating2.0 WATTS AVERAGE2.0 WATTS AVERAGE
recess_depth0.438 INCHES NOMINAL IN
thread_class2A A
adjustabilityNONADJUSTABLE
NSN5310-00-550-0658
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 238-11 · 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 DOCUMENT AND CLASSIFICATION: MIL-N-994,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
STYLE DESIGNATOR: RECESSED
•
MATERIAL THICKNESS: 0.115 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN
•
RECESS DEPTH: 0.438 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.781 INCHES NOMINAL IN
•
SURFACE TREATMENT: PLASTIC OVERALL
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-N-994,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORRECESSED
MATERIAL THICKNESS0.115 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN
RECESS DEPTH0.438 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
HOLE DIAMETER0.781 INCHES NOMINAL IN
OVERALL HEIGHT0.625 INCHES NOMINAL IN
SURFACE TREATMENTPLASTIC OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
54D6216-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
54D6216-2InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
1264-1279InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
190742InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
GT800D1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
23808TYPE CRWH1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 238-11?
238-11 is a STRAP,WRIST,ELECTROSTATIC DISCHA.
What parts can replace 238-11?
There are 30 known substitutes for 238-11: 54D6216-1, 54D6216-2, 1264-1279 and 27 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 238-11?
238-11 is cataloged in the Federal Logistics Information System under NSN 5310-00-550-0658. 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: September 2026