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3187037 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3187037: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 301 OVERALL, hole_diameter: 0.870 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN, outside_diameter: 1.200 INCHES MINIMUM AND 1.220 INCHES MAXIMUM IN, style_designator: KEY, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.020 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-762-9443, 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
3187037
NSN: 5310-00-762-9443
FSC: 5310 — Nuts and Washers
CAGE: 59364 — HONEYWELL INTERNATIONAL INC. DBA HONEYWELL INTERNATIONAL DIV AEROSPACE - TEMPE (WEST WARNER ROAD) (USA)
SPECIFICATIONS
materialSTEEL COMP 301 OVERALL
hole_diameter0.870 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN
outside_diameter1.200 INCHES MINIMUM AND 1.220 INCHES MAXIMUM IN
style_designatorKEY
surface_treatmentPASSIVATE OVERALL
material_thickness0.020 INCHES NOMINAL IN
external_key_quantity4
external_straight_key_width0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
overall_distance_including_keys1.400 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN
material_document_and_classificationQQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-762-9443
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3187037 · 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: 1.400 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.200 INCHES MINIMUM AND 1.220 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.020 INCHES NOMINAL IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
•
EXTERNAL KEY QUANTITY: 4
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS
OVERALL DISTANCE INCLUDING KEYS1.400 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.200 INCHES MINIMUM AND 1.220 INCHES MAXIMUM IN
MATERIAL THICKNESS0.020 INCHES NOMINAL IN
EXTERNAL STRAIGHT KEY WIDTH0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY4
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 301 OVERALL
HOLE DIAMETER0.870 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3187037?
3187037 is a WASHER,KEY.
What is the NSN for 3187037?
3187037 is cataloged in the U.S. Government catalog under NSN 5310-00-762-9443. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
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.