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69331-3-4 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

69331-3-4: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include MATERIAL: IRON ALLOY 660 OVERALL, HOLE TYPE: DRILLEDDRILLED, HEAD STYLE: DOUBLE HEXAGON W/HOLEDOUBLE HEXAGON W/HOLE, HEAD HEIGHT: 0.260 INCHES NOMINAL0.260 INCHES NOMINAL IN, THREAD CLASS: 3A3A, HOLE DIAMETER: 0.047 INCHES NOMINAL0.047 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-133-1556, 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
69331-3-4
NSN: 5306-01-133-1556
FSC: 5306 — Bolts
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
MATERIALIRON ALLOY 660 OVERALL
HOLE TYPEDRILLEDDRILLED
HEAD STYLEDOUBLE HEXAGON W/HOLEDOUBLE HEXAGON W/HOLE
HEAD HEIGHT0.260 INCHES NOMINAL0.260 INCHES NOMINAL IN
THREAD CLASS3A3A
HOLE DIAMETER0.047 INCHES NOMINAL0.047 INCHES NOMINAL IN
HOLE QUANTITY44
THREAD LENGTH0.313 INCHES MINIMUM AND 0.313 INCHES MINIMUM AND 0.375 INCHES MAXIMUM0.375 INCHES MAXIMUM IN
SURFACE FINISH63.0 MICROINCHES BEARING SURFACE OF HEAD63.0 MICROINCHES BEARING SURFACE OF HEAD
FASTENER LENGTH0.375 INCHES NOMINAL0.375 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HANDRIGHT-HAND
FEATURES PROVIDEDFINISHED HEADFINISHED HEAD
NSN5306-01-133-1556
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 69331-3-4 · 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
•
SURFACE FINISH: 32.0 MICROINCHES THREADS32.0 MICROINCHES THREADS
•
EXTENDED WASHER THICKNESS: 0.040 INCHES MINIMUM AND 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM0.050 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.260 INCHES NOMINAL0.260 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.375 INCHES NOMINAL0.375 INCHES NOMINAL IN
•
EXTENDED WASHER DIAMETER: 0.375 INCHES NOMINAL0.375 INCHES NOMINAL IN
•
THREAD LENGTH: 0.313 INCHES MINIMUM AND 0.313 INCHES MINIMUM AND 0.375 INCHES MAXIMUM0.375 INCHES MAXIMUM IN
•
HOLE CONFIGURATION STYLE: ROUNDROUND
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES THREADS32.0 MICROINCHES THREADS
SURFACE FINISH63.0 MICROINCHES BEARING SURFACE OF HEAD63.0 MICROINCHES BEARING SURFACE OF HEAD
EXTENDED WASHER THICKNESS0.040 INCHES MINIMUM AND 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM0.050 INCHES MAXIMUM IN
HEAD HEIGHT0.260 INCHES NOMINAL0.260 INCHES NOMINAL IN
FASTENER LENGTH0.375 INCHES NOMINAL0.375 INCHES NOMINAL IN
EXTENDED WASHER DIAMETER0.375 INCHES NOMINAL0.375 INCHES NOMINAL IN
THREAD LENGTH0.313 INCHES MINIMUM AND 0.313 INCHES MINIMUM AND 0.375 INCHES MAXIMUM0.375 INCHES MAXIMUM IN
HOLE CONFIGURATION STYLEROUNDROUND
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALLAMS5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.190 INCHES0.190 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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 69331-3-4?
69331-3-4 is a BOLT,MACHINE.
What is the NSN for 69331-3-4?
69331-3-4 is cataloged in the U.S. Government catalog under NSN 5306-01-133-1556. 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.