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Technical Data Sheet
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3691-4 — KEY,SOCKET HEAD SCREW

✓ Government record, cited
Lindy · NUT WASHER
PRODUCT OVERVIEW

3691-4: KEY,SOCKET HEAD SCREW.

From the lines cable connectivity concept developed by Lindy, Black Line USB 3.1 Type C to A cables are fully featured, entry level high resolution connection solutions, perfect for home and small office use. USB Type C features a reversible connector, so no matter which orientation the cable is inserted, a connection will always be found. This connector allows a fully bi-directional cable with automatic host and device negotiation.

Black Line USB 3.1 cables feature triple shielded construction with tinned copper conductors for premium performance and corrosion resistance. Nickel connectors and gold plated contacts maintain signal integrity and reliability. The SuperSpeed+ protocol is supported with up to 10Gbps bandwidth for rapid transfer of large data volumes.

This part is cataloged in the U.S. Government catalog under NSN 5310-01-294-2206, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
3691-4
NSN: 5310-01-294-2206
NIINs: 012942206, 016693411
FSC: 5310 — Nuts and Washers
CAGE: 0TF60 — KNIGHT AEROSPACE PRODUCTS, INC. (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
overall_length113.0 MILLIMETERS NOMINAL MM
style_designatorL-HANDLE
features_providedBALL END
wrenching_surface_size2.5 MILLIMETERS NOMINAL BOTH ENDS MM
wrenching_surface_shapeHEXAGON BOTH ENDS EXTERNAL
NSN5310-01-294-2206
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3691-4 · Lindy ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
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 3691-4?
3691-4 is a KEY,SOCKET HEAD SCREW manufactured by Lindy.
What is the NSN for 3691-4?
3691-4 is cataloged in the U.S. Government catalog under NSN 5310-01-294-2206. This indicates validated use in U.S. government and defense supply chains.
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