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Technical Data Sheet
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90-7004 — 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

The STIFFENER,AIRCRAFT is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 7075, overall_width: 1.800 INCHES NOMINAL IN, overall_length: 13.00 INCHES NOMINAL IN, special_features: 2 HOLES DIAMETER 0.096 INCHES IN, aircraft_location: TIP GEAR-STRUT DOOR WING TRAILING EDGE, material_thickness: 0.063 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 5310-01-050-1523, 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
90-7004
NSN: 5310-01-050-1523
FSC: 5310
CAGE: 28968 — CIRCOR INSTRUMENTATION TECHNOLOGIES, INC. DBA HOKE GYROLOK (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 7075
overall_width1.800 INCHES NOMINAL IN
overall_length13.00 INCHES NOMINAL IN
special_features2 HOLES DIAMETER 0.096 INCHES IN
aircraft_locationTIP GEAR-STRUT DOOR WING TRAILING EDGE
material_thickness0.063 INCHES NOMINAL IN
end_item_identificationB-52 AIRCRAFT
aircraft_mission_design_seriesB-52
material_document_and_classificationQQ-A-287 0 TEMP ASSN STD SINGLE MATERIAL RESPONSE
part_name_assigned_by_controlling_agencySTIFFENER
NSN5310-01-050-1523
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 90-7004 · 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: QQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: NICKEL ALLOY OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
HOLE DIAMETER: 0.226 INCHES MINIMUM AND 0.228 INCHES MAXIMUM IN
•
PERIPHERAL SHAPE STYLE: ROUND
•
OVERALL DIAMETER: 0.380 INCHES MINIMUM AND 0.382 INCHES MAXIMUM IN
•
THICKNESS: 0.0355 INCHES MINIMUM AND 0.0385 INCHES MAXIMUM IN
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALNICKEL ALLOY OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.226 INCHES MINIMUM AND 0.228 INCHES MAXIMUM IN
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER0.380 INCHES MINIMUM AND 0.382 INCHES MAXIMUM IN
THICKNESS0.0355 INCHES MINIMUM AND 0.0385 INCHES MAXIMUM IN
CENTER HOLE SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
907004Interchangeable
interchangeable cross-reference
interchangeable
LE261-0027-0001Interchangeable
interchangeable cross-reference
interchangeable
90-7004-3Interchangeable
interchangeable cross-reference
interchangeable
90-7004-1Interchangeable
interchangeable cross-reference
interchangeable
90-7004-2Interchangeable
interchangeable cross-reference
interchangeable
90-7004-6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 90-7004?
90-7004 is a STIFFENER,AIRCRAFT.
What parts can replace 90-7004?
There are 9 known substitutes for 90-7004: 907004, LE261-0027-0001, 90-7004-3 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 90-7004?
90-7004 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-050-1523. 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.
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Last verified: August 2026