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ST3M571-3-3 — ST3M571-3-3

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

ST3M571-3-3: ST3M571-3-3.

The ST3M571-3-3 is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5306-01-456-6798, 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
ST3M571-3-3
NSN: 5306-01-456-6798
FSC: 5306 — Bolts
CAGE: 58998 — FASTENER INNOVATION TECHNOLOGY, INC. DBA F I T (USA)
SPECIFICATIONS
Part NumberST3M571-3-3
NSN5306-01-456-6798
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: ST3M571-3-3 · 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: 0.054 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.265 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.576 INCHES MINIMUM AND 0.594 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.399 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
HEAD STYLE: DOUBLE HEXAGON EXTENDED WASHER
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.054 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN
HEAD HEIGHT0.265 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN
FASTENER LENGTH0.576 INCHES MINIMUM AND 0.594 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
THREAD LENGTH0.399 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD STYLEDOUBLE HEXAGON EXTENDED WASHER
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH0.188 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 4
GS1030-3-3Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
11831-3-3Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
10116293Reference document
Same NSN cross-reference
Reference document — Informative reference only
BM3326-3-3Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST3M571-3-3?
ST3M571-3-3 is a ST3M571-3-3.
What parts can replace ST3M571-3-3?
There are 4 known substitutes for ST3M571-3-3: GS1030-3-3, 11831-3-3, 10116293 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ST3M571-3-3?
ST3M571-3-3 is cataloged in the U.S. Government catalog under NSN 5306-01-456-6798. This indicates validated use in U.S. government and defense supply chains.
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U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.