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591111 — FITTING,VALVE OUTLET

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

591111: FITTING,VALVE OUTLET.

The FITTING,VALVE OUTLET is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5305-00-682-5817, 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
591111
NSN: 5305-00-682-5817
NIINs: 006825817, 009065269
FSC: 5305 — Screws
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
general_characteristics_item_descriptionALUMINUM ALLOY,1.425 IN. LG,1/4 IN. TUBE CONNECTOR ON FIRST END,9/16-18 MALE THD W/GASKET SEAT ON SECOND END,SLOT ON SECOND END EXTENSION,HEX WRENCHING BOSS IN CENTER IN
NSN5305-00-682-5817
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 591111 · 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 ACROSS FLATS: 0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.109 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.615 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.645 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.112 INCHES IN
•
HEAD STYLE: FLAT CHAMFER
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
HEAD HEIGHT0.109 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN
FASTENER LENGTH0.615 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN
THREAD LENGTH0.645 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.112 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
INTERNAL DRIVE STYLEHEXAGON
THREAD CLASS3A A
SUBSTITUTES & CROSS-REFERENCES 2
12Z1007-11Reference document
Same NSN cross-reference
Reference document — Secondary reference
5305006825817Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 591111?
591111 is a FITTING,VALVE OUTLET.
What parts can replace 591111?
There are 2 known substitutes for 591111: 12Z1007-11, 5305006825817. Substitute compatibility should be verified for your specific system.
What is the NSN for 591111?
591111 is cataloged in the U.S. Government catalog under NSN 5305-00-682-5817. 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.