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319-40-01 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

319-40-01: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: O/A DIA. 0.437 IN; O/A H 0.130 IN; PHOTOGRAPHIC LENS OPENING DIA.

0.039 IN; MATL HYTREL POLYESTER ELASTOMER,BLACK IN. This part is cataloged in the U.S. Government catalog under NSN 5325-01-178-0573, 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
319-40-01
NSN: 5325-01-178-0573
NIINs: 011780573, 012648342
FSC: 5325 — Fastening Devices
CAGE: 59364 — HONEYWELL INTERNATIONAL INC. DBA HONEYWELL INTERNATIONAL DIV AEROSPACE - TEMPE (WEST WARNER ROAD) (USA)
SPECIFICATIONS
general_characteristics_item_descriptionO/A DIA. 0.437 IN; O/A H 0.130 IN; PHOTOGRAPHIC LENS OPENING DIA. 0.039 IN; MATL HYTREL POLYESTER ELASTOMER,BLACK IN
NSN5325-01-178-0573
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 319-40-01 · 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
•
USAGE DESIGN: EXTERNAL OR INTERNAL
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END STYLE: DIAGONAL PARALLEL
•
MATERIAL DIAMETER: 0.125 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-W-423, COMP 302, COND B FED SPEC SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
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OUTSIDE DIAMETER: 2.890 INCHES MINIMUM AND 2.910 INCHES MAXIMUM IN
•
INSIDE DIAMETER: 2.765 INCHES MINIMUM AND 2.785 INCHES MAXIMUM IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS
USAGE DESIGNEXTERNAL OR INTERNAL
END STYLEDIAGONAL PARALLEL
MATERIAL DIAMETER0.125 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-W-423, COMP 302, COND B FED SPEC SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLEROUND
OUTSIDE DIAMETER2.890 INCHES MINIMUM AND 2.910 INCHES MAXIMUM IN
INSIDE DIAMETER2.765 INCHES MINIMUM AND 2.785 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESTRAIGHT GAP
SURFACE TREATMENTPASSIVATE
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 319-40-01?
319-40-01 is a RING,RETAINING.
What is the NSN for 319-40-01?
319-40-01 is cataloged in the U.S. Government catalog under NSN 5325-01-178-0573. 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.