NUTS
A nut is a fastener with a threaded hole. It is attached to a bolt, screw or stud to provide a clamping force and prevent axial movement. Nuts are available in a variety of shapes, sizes, materials, and thread patterns.
Below are some of the most recognised nuts:
A nut is a fastener with a threaded hole. It is attached to a bolt, screw or stud to provide a clamping force and prevent axial movement. Nuts are available in a variety of shapes, sizes, materials, and thread patterns.
Hex Nuts: Hex nuts are mostly used for fastening to a screw or bolt. They are the most common nuts, hex-shaped with internal threads.
Heavy Hex Nuts: They are Larger, heavier, and thicker than a standard hex nut. Heavy hex nuts are hex-shaped, internally threaded.
Cap Nuts: The cap nut, also known acorn nut. The nut has a domed top to prevent contact with the external thread.
Castle Nuts: Used with cotter pins to prevent loosening also called a castle or slotted nut, is not with slots cut into the top. Used in low-torque applications such as holding a wheel bearing in place.
Coupling Nuts: A coupling nut is used for joining two male threads often threaded rod. The outside of it is a hex so it can be driven with a wrench.
Flange Serrated Nuts: A flange nut has a wide flange at one end which acts as an integrated washer that does not move or spin. The serrated flange disperses the pressure of the nut over the part being secured and creates a locking action to prevent loosening.
Hex Jam Nuts: A jam nut is used when a nut needs to be locked in place without clamping to another object. Hex jam nuts are hex-shaped with internal threads, they are thinner than hex nuts.
Keps-K Lock Nuts: They are also known as keps nut, a k-nut or a washer nut, a keps-k lock nut has an attached free-spinning lock washer. Keps nuts are meant to make assembly more convenient.
Knurled Thumb Nuts: A knurled thumb nut has a knurled outside surface rather than a hex, which facilitates tightening by hand. Often used in decorative finishes or applications.
Nylon Hex Jam Nuts: A low-profile lock nut is hex-shaped, internally threaded with a nylon insert. This material avoids loosening & cross threads to stop the nut from backing off of the fastener.
Nylon Insert Lock Nuts: A nylon insert lock nut is hex-shaped, internally threaded with a nylon insert. This material avoids loosening & cross threads to stop the nut from backing off of the fastener.
Prevailing Torque Lock Nuts (Stover): Also known as stover nuts, prevailing torque lock nuts have chamfered corners and a conical top. The distortion in the top thread avoids loosening from vibration. They are also called one-way nuts.
Slotted Hex Nuts: They are nuts with portions cut out designed to be used with a cotter ping to create a locking mechanism. These nuts are like a castle nut but have a lower profile which sometimes makes them a better option.
Square Nuts: A four-sided nut, flat or beveled on top. Square nuts provide a greater surface contact area which provides more resistance to loosening. Typically coupled with square head bolts.
Structural Heavy Hex Nuts: They are comparable to finish nuts but are made to be thicker and much stronger. They are typically used in steel-to-steel structural connections.
Break Away or Shear Nuts: They are cone nuts with a hexagonal gripping point. They are designed with an intended flaw to snap the hexagonal head off once the highest torque is reached, leaving behind a protective cone nut that cannot be easily removed.
Tri-Groove Nuts: These nuts have a tapered diameter making them difficult to grip with grabbing devices such as adjustable wrenches or pliers. They require a special unconventional gripping device to install them making them more secure than a typical nut.
Wing Nuts: These are threaded nuts with wings on each side of the body allowing for manual turning and installation. Easy hand assembly and used when the nut needs to be removed often.
At Precision Metal we manufacture and stock nuts of various grades and standard as well as custom designed.
Below is the list of nuts we offer:
| Hex Nuts | Structural Heavy Hex nuts |
| Heavy hex nuts | Break Away Or Shear Nuts |
| Cap nuts/ Slotted Nuts | Tri-Groove Nuts |
| Cap nuts/ Slotted Nuts | Wing Nuts |
| Coupling nut | Spherical Faced Nuts |
| Flange Serrated Nuts | Tee Nuts |
| Hex Jam Nut / thin nut | Countersunk nuts |
| Kep Nuts | Rivet nuts |
| Knurled Thumb Nuts | Square weld nuts |
| Nylon Hex Jam Nut | Long Nuts |
| Nylon Insert Locknuts | Nyloc Domed Cap Nut |
| Prevailing Torque Lock Nuts (Stover): | Lifting Eye Nuts |
| Slotted Hex Nuts | Bow Nuts |
| Square Nuts |
Standards: ASTM/ ASME/ BS/ DIN/ JIS/ BS/ EN/ ISO
| THREAD FORMS (OTHER FORMS CAN BE SUPPLIED ON REQUEST) | ||
| UNC | UNS | Metric Coarse |
| BSW | 8UN | UNF |
| Metric Fine | BSF | |
DIA RANGE: M3 TO M100 AND 1/8” TO 6”
COATING:
- SELF COLOR
- BLACK OXIDIZING
- MECHANICAL GALVANIZED
- HOT DIP GALVANIZED
- ELECTRO ZINC PLATING
- ZINC DICHROMATE
- ZINC NICKEL
- ZINC YELLOW
- BRASS
- ELECTROLESS NICKEL PLATING
- ZINC BICHROMATE
- CERAMIC COATING
- TECTYL COATING
- TAKECOAT 1000
- MOYLKOTE COATING
- ZINC FLATE COATING
- PTFE XYLAN/XYLAR COATING
- DACROMET COATING
- AS PER CLIENT SPECIFICATIONS