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77631 — PRINTED CIRCUIT BOARD

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

77631: PRINTED CIRCUIT BOARD.

The PRINTED CIRCUIT BOARD is a the manufacturer industrial component. Key specifications include height: 0.015 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN, diameter: 0.1247 INCHES MINIMUM AND 0.1251 INCHES MAXIMUM IN, material: STEEL CORROSION RESISTING OVERALL, head_style: FLAT, hardness_rating: 42.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL, style_designator: STRAIGHT. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-052-8034, 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
77631
NSN: 5315-00-052-8034
NIINs: 000528034, 010842460, 017239078
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 11599 — TRIUMPH ENGINE CONTROL SYSTEMS LLC (USA)
SPECIFICATIONS
height0.015 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
diameter0.1247 INCHES MINIMUM AND 0.1251 INCHES MAXIMUM IN
materialSTEEL CORROSION RESISTING OVERALL
head_styleFLAT
hardness_rating42.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
style_designatorSTRAIGHT
pin_head_diameter0.210 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
under_head_length0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
first_hole_diameter0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
hole_arrangement_styleONE END DRILLED
end_item_identificationTDM-102-1; PCC HAW
material_document_and_classificationAMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-052-8034
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 77631 · 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
•
HOLE ARRANGEMENT STYLE: ONE END DRILLED
•
UNDER HEAD LENGTH: 0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
•
FIRST HOLE DIAMETER: 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
•
HARDNESS RATING: 42.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: STRAIGHT
•
PIN HEAD DIAMETER: 0.210 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
DIAMETER: 0.1247 INCHES MINIMUM AND 0.1251 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HOLE ARRANGEMENT STYLEONE END DRILLED
UNDER HEAD LENGTH0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
FIRST HOLE DIAMETER0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
HARDNESS RATING42.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORSTRAIGHT
PIN HEAD DIAMETER0.210 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
DIAMETER0.1247 INCHES MINIMUM AND 0.1251 INCHES MAXIMUM IN
HEAD STYLEFLAT
HEIGHT0.015 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
CM-77631Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 77631?
77631 is a PRINTED CIRCUIT BOARD.
What parts can replace 77631?
There is 1 known substitute for 77631: CM-77631. Substitute compatibility should be verified for your specific system.
What is the NSN for 77631?
77631 is cataloged in the U.S. Government catalog under NSN 5315-00-052-8034. 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.