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Nuts

Nuts are extensively used in a wide range of aerospace and industrial applications. This category includes an extensive collection of nuts sourced by quality producers and offered in different types, standard and miniature versions, shapes, various materials & finishes, sizes, aerospace/military or industrial (commercial) specifications/standards and packing options to meet application requirements. Aerospace/Military nuts commonly used in aircraft applications are usually made of cadmium plated carbon steel, stainless steel or  aluminum alloys and structured in different series based on the standard they conform(*). Non Military (Commercial) nuts meet DIN, ISO and other standards.

Nuts can divided into general groups such as  self-locking and non-self-locking hexagonal nuts or anchor nuts (aka nut plates). Non-self-locking nuts are those that must be safetied by external locking devices, such as cotter pins, safety wire, or locknuts. Self-locking nuts contain the locking feature as an integral part. Anchor nuts (aka nut plates) are designed for blind mounted applications where it is impractical to use hexagonal nuts and are available in different types (fixed or floating, one lug, two lugs, corner, etc.). 

Nuts are offered as part of their producers' respective brands,  or as our own branded (AVIATIONEU NEW ERA) product lines which are competitively priced and consist cost effective alternatives to the respective OEM parts. In certain cases, they are also offered as parts of aircraft and aircraft engine manufacturers. They are available in Metric(**) or Imperial systems and sold in in pieces although packs are also used, where the number of nuts per pack is indicated after the letters "PK" in the product SKU. Appearing prices are always for the used units of measurement each time. For additional information please refer to the individual product presentations, the supplied documentation or contact us.

(*) Common Aerospace/Military Fastener Standards

Army-Navy Standards (AN)

Predecessor to Mil-Spec (MS), AN fasteners are the industry standard for aircraft, indicating that these fasteners are made to military specifications to stand up to the toughest jobs without faltering.

Military Standards  (Mil-Spec, MS)

A United States Defense Standard is used to help achieve standardization objectives by the U.S. Department of Defense. Also used by other non-Defense government organizations, technical organizations, and industry. 

National Aerospace Standards (NAS & NA)

“NAS” stands for National Aerospace Standard. The NA prefix is for Metric standards. NAS standards include Part Standards for high strength, precision fasteners.

Aerospace Industries Association Standards (NASM and NAM)

Aerospace Industries Association (AIA), in coordination with the US Department of Defense, has converted a number of MIL-spec's to NAS. These now carry a “NASM” (for inch based) or “NAM” (for Metric based) prefix. The standard continues to be procured to the MS part number.

(**) There is currently no military specification for Metric nut plates.

Nuts

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AN316 Series Hex Thin...

AN316 Series hexagonal steel cadmium plated  thin non-locking check  nuts are Military Specification versions of non-locking jam nuts used typically to lock in adjustments where a male threaded part screws only partway into a female threaded part (rod ends, grub screws, bulkhead fittings, etc). AN316 Series jam nuts are thinner than the AN315 specification nuts for use in tighter installations. AN316 hex check nuts can carry half the tension load of the AN315 nut.

Certification Details:

AN316 (REV. 11)., AIR FORCE-NAVY AERONAUTICAL STANDARD: Nut, Jam, Hexagon (25 Feb 1991). Superseded by NASM316. The Part Identification Number (PIN) for AN316 and the part number for NASM316 are identical. The part numbers have not been changed.

AN315 Series Hex Plain...

AN315 Series hex plain nuts are manufactured from steel and cadmium plated per QQ-P-416A, Type II, Class 3. Similar to common nuts  but with a rugged construction they are designed and built with aviation grade materials and to specific aviation design specifications. They can carry the same high tension load as the AN310 castle nuts and require an auxiliary locking device such as a check nut or lock washer. The following letters are used to designate specific types of airframe nuts:

"C" before dash number for corrosion resistance steel nuts

"D" before dash number for aluminum-alloy nuts

"L" after dash number for left-hand thread

"R" after dash number for right-hand thread

HOWMET AEROSPACE (ARCONIC)...

A plate nut, also known as a nut plate, anchor nut or anchor plate, is a stamped sheet metal nut that is usually riveted to a workpiece. They have a long tube that is internally threaded and a plate with two clearance holes for rivets. These terms are used interchangeably throughout product presentations to describe respective products.

Floating nut plates are low profile and lightweight plates used to install a captive nut behind a panel. The floating nut allows for an assembly that is not perfectly aligned. These lightweight, low-profile nut plates are designed for blind mounted applications where it is impractical to use hex nuts or where it is desirable to have an attached nut for ease of maintenance. F5000/MS21059 Series floating  two-lug nut plates by HOWMET AEROSPACE (ARCONIC) are made of C1050 carbon Steel per AMS5085 or 8740 alloy steel per AMS6322. They are cadmium plated per AMS-QQ-P-416, Type II with dry film lubricant (F5000) or carbowax (F5000-CW). They are superseded by NASM21059 series.

Certification Details:

MS21059J, MILITARY SPECIFICATION SHEET: Nut, Self-Locking, Plate, Two Lug, Floating, Low Height Steel, 125 KSI FTU, 450 Deg. F (01 Feb 1994) [Superseded by NASM21059].