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547A003091 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

547A003091: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, hole_diameter: 1.021 INCHES MINIMUM AND 1.041 INCHES MAXIMUM IN, outside_diameter: 1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN, style_designator: KEY, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-086-9944, 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
547A003091
NSN: 5310-00-086-9944
FSC: 5310 — Nuts and Washers
CAGE: 03956 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
hole_diameter1.021 INCHES MINIMUM AND 1.041 INCHES MAXIMUM IN
outside_diameter1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN
style_designatorKEY
surface_treatmentPASSIVATE OVERALL
material_thickness0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
external_key_quantity1
external_prebent_key_angle90.0 DEGREES NOMINAL
external_prebent_key_width0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN
internal_straight_key_width0.122 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN
overall_distance_including_keys1.406 INCHES NOMINAL IN
material_document_and_classificationQQ-S-766,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-086-9944
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 547A003091 · 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
•
INTERNAL STRAIGHT KEY WIDTH: 0.122 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 0.406 INCHES NOMINAL IN
•
OVERALL DISTANCE INCLUDING KEYS: 1.406 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-766,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
•
EXTERNAL KEY QUANTITY: 1
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.122 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY0.406 INCHES NOMINAL IN
OVERALL DISTANCE INCLUDING KEYS1.406 INCHES NOMINAL IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN
MATERIAL THICKNESS0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY1
EXTERNAL PREBENT KEY ANGLE90.0 DEGREES NOMINAL
SURFACE TREATMENTPASSIVATE OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
003091Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 547A003091?
547A003091 is a WASHER,KEY.
What parts can replace 547A003091?
There is 1 known substitute for 547A003091: 003091. Substitute compatibility should be verified for your specific system.
What is the NSN for 547A003091?
547A003091 is cataloged in the U.S. Government catalog under NSN 5310-00-086-9944. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.