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5181688 — PRINTED WIRING BOARD

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5181688: PRINTED WIRING BOARD.

The PRINTED WIRING BOARD is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, hole_diameter: 0.251 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN, overall_width: 0.795 INCHES MINIMUM AND 0.800 INCHES MAXIMUM IN, overall_height: 0.057 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN, overall_length: 2.370 INCHES MINIMUM AND 2.380 INCHES MAXIMUM IN, outside_diameter: 0.610 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-347-7630, 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
5181688
NSN: 5310-00-347-7630
NIINs: 003477630, 015987648
FSC: 5310 — Nuts and Washers
CAGE: 19200 — COMBAT CAPABILITIES DEVELOPMENT COMMAND (CCDC) ARMAMENTS CENTER DBA CCDC DIV LOGISTICS RESEARCH AND ENGINEERING DIRECTORATE (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
hole_diameter0.251 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
overall_width0.795 INCHES MINIMUM AND 0.800 INCHES MAXIMUM IN
overall_height0.057 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN
overall_length2.370 INCHES MINIMUM AND 2.380 INCHES MAXIMUM IN
outside_diameter0.610 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN
special_featuresMODULATED INFRARED LIGHT DETECTOR
style_designatorKEY
material_thickness0.030 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN
external_prebent_key_width0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
external_prebent_key_length0.029 INCHES NOMINAL IN
overall_distance_including_keys0.7006 INCHES NOMINAL IN
NSN5310-00-347-7630
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5181688 · 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
•
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY: 0.320 INCHES NOMINAL IN
•
EXTERNAL PREBENT KEY LENGTH: 0.029 INCHES NOMINAL IN
•
OVERALL DISTANCE INCLUDING KEYS: 0.7006 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-746 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.610 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.030 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN
•
EXTERNAL PREBENT KEY WIDTH: 0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY0.320 INCHES NOMINAL IN
EXTERNAL PREBENT KEY LENGTH0.029 INCHES NOMINAL IN
OVERALL DISTANCE INCLUDING KEYS0.7006 INCHES NOMINAL IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-746 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.610 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN
MATERIAL THICKNESS0.030 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN
EXTERNAL PREBENT KEY WIDTH0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY OVERALL
HOLE DIAMETER0.251 INCHES MINIMUM AND 0.253 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 5181688?
5181688 is a PRINTED WIRING BOARD.
What is the NSN for 5181688?
5181688 is cataloged in the U.S. Government catalog under NSN 5310-00-347-7630. 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.