AN960
Flat Washers
Mumbai · India
Why AN960 Flat Washers Is a Distinct Aerospace Reference
AN960 washers are dimensioned specifically to pair with the AN and NAS aircraft bolt series — the outer diameter, inner diameter, and thickness are all held to tolerances that match the head bearing diameter and shank sizing of those bolt families precisely, rather than following the looser dimensional range a general commercial flat washer standard allows. That precision matters because aircraft structural joints are often weight-optimized and clearance-limited in ways general machinery assembly rarely is.
AN960 also comes in two thickness series for exactly that reason — the standard series for typical structural bearing needs, and a thinner series (commonly suffixed “L”) for locations where full washer thickness would create clearance or grip-length problems in an already tight stack-up. Choosing the wrong series can mean a bolt that’s now too long or too short for its intended grip range once the washer stack is accounted for.
Akbar Fasteners Pvt. Ltd. exports to over 50 countries, and our AN960 washer range is manufactured across standard and thin series, verified by dimensional testing under our ISO 9001:2015 quality system.
Where AN960 Genuinely Applies
Precise Match to AN/NAS Bolt Series
Dimensioned specifically to fit aerospace bolt head bearing diameters correctly, not just nominally.
Two Thickness Series for Stack-Up Control
Standard and thin series let engineers control grip length precisely in tight aircraft clearances.
Full Material Range for Environment
Steel, corrosion-resistant steel, and aluminum options matched to structural and weight requirements.
Verified Dimensional Precision
Batch dimensional testing confirms genuine fit to AN/NAS bolt series, not just nominal size.
Standard vs Thin Series Explained
AN960 Standard Thickness
The common full-thickness washer for typical structural bearing needs across most aircraft assembly.
AN960-XXL Thin Washer
Reduced thickness variant for tight clearance and grip-length-critical locations where the standard series would create a stack-up problem.
Steel, CRES, and Aluminum
Steel and corrosion-resistant options for structural load, aluminum for weight-critical, non-structural applications.
AN960 vs FF-W-100 Selection Guide
Confirming whether the assembly is genuinely aerospace-grade or general federal/commercial procurement determines which flat washer specification actually fits. This table is the quick reference we use with buyers before quoting.
| Aspect | AN960 | FF-W-100 |
|---|---|---|
| Reference Environment | Aerospace / aircraft assembly | General federal / commercial procurement |
| Matching Bolt Series | AN / NAS aircraft bolts | General federal hex bolts |
| Thickness Options | Standard and Thin (L) series | Type A / Type B series |
| Dimensional Tolerance | Tighter, aerospace-controlled | Standard commercial tolerance |
AN960 Specification Details
Materials We Manufacture In
- Carbon Steel Cadmium / Zinc Plated
- Corrosion-Resistant Steel 300 Series
- Aluminum 2024-T4 / Anodized
- Finish Per Corrosion Environment
How AN960 Washers Are Made
- Process Stamped & Precision Sized
- Series Standard / Thin (L)
- Testing Dimensional Verified
- Quality Batch Sampled
Available Dimensions
- Nominal Bolt Size #2 – 1″ (Inch Series)
- Metric Equivalent Available to Drawing
- Series Standard / Thin
- Matching Bolt AN / NAS Series
Application Areas
Wherever an aircraft assembly needs precise bearing surface fit and clearance control.
Aircraft Structural Assembly
frame connection points
Aircraft Systems & Equipment Mounting
bracket fastening
Defense & Military Aircraft
aerospace washer needs
General Aviation Manufacturing
and structural repair
Aerospace MRO & Repair
component replacement work
Naval Aviation Equipment
aviation procurement
Drone & UAV Structure
washer fastening
General Aerospace-Grade Fastening
explicitly specified
Standard Export Documentation
Prepared as standard practice for every AN960 washer shipment.
Mill Test Certificate (MTC)
Heat number, chemical composition, and mechanical property verification for every lot.
Certificate of Conformance
Confirms the shipment matches the purchase order series/material specification in full.
Dimensional Inspection Report
Verification of outer diameter, inner diameter, and thickness against AN960 series tolerances.
Certificate of Origin (COO)
Confirms India as country of manufacture for destination customs purposes.
NABL Accredited Test Reports
Independent mechanical and dimensional testing available on request for critical applications.
Commercial Invoice & Packing List
Itemized value, Incoterm, and detailed carton/weight breakdown for customs clearance.
Internationally Recognised Standards Coverage
Related Fastener Grades & Materials
FF-W-100 Flat Washers
Our general federal specification flat washer range for non-aerospace procurement needs.
View FF-W-100 →MIL-N-25027 Self-Locking Nuts
Our aerospace self-locking nut specification, often paired with AN960 washers in the same joint.
View MIL-N-25027 →MS20426 Countersunk Rivets
Our aerospace solid rivet range for external aerodynamic skin surfaces.
View MS20426 →Fasteners Manufacturer & Exporter to the USA
Our broader capability manufacturing to ASTM/ASME and US federal/military standards.
View USA Export Guide →Need a Precise Fit
to Your AN/NAS Bolt Series?
Send us your bolt size, grip length requirement, and material preference — we’ll confirm the right AN960 series and quote across our full range. Akbar Fasteners Pvt. Ltd. responds within 24 hours.
Sales: +91 724 0000 733 · Support: +91 800 9315 333 · sales@akbarfasteners.in