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R74195 — BOLT,EXTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

R74195: BOLT,EXTERNALLY RELIEVED BODY.

The BOLT,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8637 OR STEEL COMP 8640 OVERALL, head_style: DOUBLE HEXAGON EXTENDED WASHER, head_height: 0.390 INCHES NOMINAL IN, thread_class: 3A A, thread_length: 1.180 INCHES NOMINAL IN, fastener_length: 2.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-219-2955, 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
R74195
NSN: 5306-01-219-2955
FSC: 5306 — Bolts
CAGE: 75160 — DEERE & CO (USA)
SPECIFICATIONS
materialSTEEL COMP 8637 OR STEEL COMP 8640 OVERALL
head_styleDOUBLE HEXAGON EXTENDED WASHER
head_height0.390 INCHES NOMINAL IN
thread_class3A A
thread_length1.180 INCHES NOMINAL IN
fastener_length2.500 INCHES NOMINAL IN
hardness_rating36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentPHOSPHATE ZINC OVERALL
width_between_flats0.611 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN
nominal_thread_diameter0.500 INCHES IN
extended_washer_diameter0.714 INCHES NOMINAL IN
NSN5306-01-219-2955
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: R74195 · 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
•
EXTENDED WASHER THICKNESS: 0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.390 INCHES NOMINAL IN
•
FASTENER LENGTH: 2.500 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: JDT826,FSC-75160 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 0.714 INCHES NOMINAL IN
•
THREAD LENGTH: 1.180 INCHES NOMINAL IN
•
HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD ALL MATERIAL RESPONSES OVERALL
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
HEAD HEIGHT0.390 INCHES NOMINAL IN
FASTENER LENGTH2.500 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONJDT826,FSC-75160 MFR REF SINGLE TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER0.714 INCHES NOMINAL IN
THREAD LENGTH1.180 INCHES NOMINAL IN
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD ALL MATERIAL RESPONSES OVERALL
FIRST DIAMETER FROM HEAD0.413 INCHES MINIMUM AND 0.423 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.500 INCHES IN
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
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 R74195?
R74195 is a BOLT,EXTERNALLY RELIEVED BODY.
What is the NSN for R74195?
R74195 is cataloged in the U.S. Government catalog under NSN 5306-01-219-2955. 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.