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S-2691 — SEAT,VALVE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

S-2691: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL, seat_radius: 0.312 INCHES NOMINAL IN, overall_height: 0.245 INCHES NOMINAL IN, style_designator: PLAIN, body_inside_diameter: 1.395 INCHES NOMINAL IN, body_outside_diameter: 2.145 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-208-7354, 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
S-2691
NSN: 5306-00-208-7354
NIINs: 002087354, 011093055
FSC: 5306 — Bolts
CAGE: 78500 — MERITOR HEAVY VEHICLE SYSTEMS, LLC (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
seat_radius0.312 INCHES NOMINAL IN
overall_height0.245 INCHES NOMINAL IN
style_designatorPLAIN
body_inside_diameter1.395 INCHES NOMINAL IN
body_outside_diameter2.145 INCHES NOMINAL IN
seating_surface_shapeRADIAL
NSN5306-00-208-7354
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: S-2691 · 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
•
HEAD HEIGHT: 0.234 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.125 INCHES NOMINAL IN
•
THREAD LENGTH: 1.000 INCHES MINIMUM IN
•
HARDNESS RATING: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-1222,GR 8 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
FEATURES PROVIDED: FINISHED HEAD
•
HEAD STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.234 INCHES NOMINAL IN
FASTENER LENGTH1.125 INCHES NOMINAL IN
THREAD LENGTH1.000 INCHES MINIMUM IN
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-1222,GR 8 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.628 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 3
69734Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MIL-DTL-1222Reference document
Same NSN cross-reference
Reference document — Identification reference
MIL-S-1222Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 S-2691?
S-2691 is a SEAT,VALVE.
What parts can replace S-2691?
There are 3 known substitutes for S-2691: 69734, MIL-DTL-1222, MIL-S-1222. Substitute compatibility should be verified for your specific system.
What is the NSN for S-2691?
S-2691 is cataloged in the U.S. Government catalog under NSN 5306-00-208-7354. 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.