Aluminum - Very light, malleable, and ductile with high heat and
electrical conductivity. Non-magnetic with good corrosion resistance
against certain chemicals and acids but weak resistance against other
elements such as sea water.
Belleville Washer- Domed, compression washer
Bevel Washer- Slanted, square washer which is thicker on one side
than the other. The slant of the bevelled washer can offset a slanted
surface, so that a bolt going into the washer may be parallel to the
floor or ground.
Brass - About two-thirds copper, one-third zinc. Non-magnetic
with good strength, toughness and high electrical conductivity. Good
corrosion resistance, but not in salt water.
Chromium- The most important element providing corrosion resistance
in stainless steel. BY adding 12% chromium to ordinary steel,
stainless steel is formed. Chromium offsets the corrosive effects of
carbon found in steel and is the primary factor in the ability of
stainless to form a passive film on its surface providing corrosion
Copper - Excellent conductor of heat and electricity. It is
malleable, ductile, and non-magnetic with low to average strength and
good corrosion resistance.
Fender washer - An over sized flat washer with a larger outside diameter used to further distribute load, especially on soft materials.
MS - Stands for Military Standards. The overriding characteristic
of MS fasteners compared to commercial products is the extensive
inspection and lot traceability for MS.
Monel- Composed basically of two-thirds nickel, one-third copper
with good strength, excellent corrosion resistance against salt water
and in high temperatures.
Non-Ferrous - Metals without iron, such as brass and silicon bronze.
Nylon- Light and low in strength compared to metal fasteners. Nylon
is non-magnetic, good for insulation, and corrosion resistant against
SAE- Stands for Society of Automotive Engineers
SILICON BRONZE- Alloy made of 95% - 98% copper, plus a small
amount of silicon for added strength. Small amounts of manganese and
aluminum may also be added for strength, and lead may be added for
machineability. Silicon bronze is non-magnetic, with a high degree of
thermal conductivity and high corrosion resistance against sea
water,gases, and sewage.
STAINLESS STEEL- With the addition of 12% chromium to iron,
stainless steel is formed. The chromium protects the iron against most
corrosion or red-colored rust. More detailed stainless steel information can be found here.
TAP BOLT- Fully threaded hex bolt that would normally have partial threading.