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Technical Data Sheet
PartsTable / COMPONENT / 220638
220638 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include material: STEEL OVERALL, hole_type: DRILLED, body_style: STRAIGHT SHAPE, head_style: HEXAGON, shell_type: SOLID, head_height: 0.312 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-022-0638, 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
220638
NSN: 5305-00-022-0638
FSC: 5305
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_typeDRILLED
body_styleSTRAIGHT SHAPE
head_styleHEXAGON
shell_typeSOLID
head_height0.312 INCHES NOMINAL IN
thread_class2A A
hole_diameter0.085 INCHES NOMINAL IN
hole_quantity1
overall_width0.479 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN
terminal_typeSOLDER WELL SINGLE MATING END SINGLE CONTACT GROUPING
thread_length1.250 INCHES MINIMUM IN
NSN5305-00-022-0638
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 220638 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
WIDTH BETWEEN FLATS: 0.750 INCHES NOMINAL IN
•
HOLE CONFIGURATION STYLE: HEXAGON FLATS
•
DEPARTURE FROM CITED DOCUMENT: AS MODIFIED BY HOLE TYPE AND QUANTITY
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 10P STYLE AND 2 GRADE
•
MINIMUM YIELD STRENGTH: 55000 POUNDS PER SQUARE INCH LBS
•
MATERIAL: STEEL OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
HARDNESS RATING: 100.0 ROCKWELL B MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH BETWEEN FLATS0.750 INCHES NOMINAL IN
HOLE CONFIGURATION STYLEHEXAGON FLATS
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY HOLE TYPE AND QUANTITY
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 10P STYLE AND 2 GRADE
MINIMUM YIELD STRENGTH55000 POUNDS PER SQUARE INCH LBS
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
HARDNESS RATING100.0 ROCKWELL B MAXIMUM OVERALL
HOLE DIAMETER0.085 INCHES NOMINAL IN
THREAD CLASS2A A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
09360340Interchangeable
interchangeable cross-reference
interchangeable
381-003-001Interchangeable
interchangeable cross-reference
interchangeable
DEM9PInterchangeable
interchangeable cross-reference
interchangeable
FFS85TYPE2STYLE10PGRADE2Interchangeable
Same NIIN cross-reference
interchangeable
BCAX4SInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 220638?
220638 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace 220638?
There are 5 known substitutes for 220638: 09360340, 381-003-001, DEM9P and 2 more. Substitute compatibility should be verified for your specific system.
Is 220638 still available?
220638 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026