Kershaw Project ATOM Interval Dagger Knife Fixed (3.5 Inch PA-66 Glass Fiber Plastic Non-Metal Blade and Handle) No Sheath KS1399

MANUFACTURER: Kershaw Knives
MPN: 1399

Our Price:

Sheath Options:
Qty: - +
   - OR -   

The Interval proves that lightweight doesn't have to mean small. Despite a 7.4-inch overall length, this Project ATOM fixed blade weighs under an ounce. Other unique elements include its drop point blade, which still forms a distinct, sharp tip. Like all Project ATOM Kershaws, the edges are blunt and the PA-66 nylon and glass fiber combo material is resilient to rust. Don't be fooled by its size. The Interval is light like atoms, yet its larger form factor gives users extra surface area for work tasks.

Project ATOM is a unique lineup of Kershaw fixed blades that are light to carry, easy to collect, and fun to show off. Using an extremely durable polymer blend reinforced with glass fibers, the blades feature blunt edges and no blade steel, but plenty of strength and sharp tips.

Sheath Options: Project Atom covert polymer GRN knives are sold standard without a sheath but we have several custom, 100% Non-Metallic, sheath options so you can choose the sheath that is perfect for you:

  • Sheath Option 1 - Handmade leather sheath that can be carried either vertically or horizontally on the belt and may also be used as a neck sheath when you rig a neck lanyard to the sheath.
  • Sheath Option 2 - Handmade leather sheath designed for inside the waist band (IWB) carry. This versatile sheath is the ultimate for concealed carry as it can be worn either inside the waistband (concealed carry method) or outside the waistband (traditional carry method).
  • Sheath Option 3 - Slim, elastic nylon sheath designed to be worn either vertically on the belt or as a neck sheath when you rig a neck lanyard to the sheath. Also, because it is so slim it can also be used for inside the pocket carry.

Note: If you want a sheath then please choose from one of the above sheath options when placing your order. If you want more than one style of sheath then please see the below links where you can order the sheath separately.


  • Larger form factor, yet light to carry
  • Knife is made of strong PA-66 nylon and glass fiber
  • Blunt edge and no blade steel; last resort pointed tip for self-defense
  • Easy to carry with included lanyard hole

Kershaw Knives - 1399 Specifications:

  • Overall Length:
    7.40 in. (18.8 cm)
  • Blade Length:
    3.50 in. (8.9 cm)
  • Cutting Edge Length:
    3.50 in. (8.9 cm)
  • Blade Thickness:
    0.15 in. (3.8 mm)
  • Blade Width:
  • Blade Material:
    PA-66 Glass Fiber
  • Blade Hardness:
  • Blade Style:
    Drop Point
  • Blade Grind:
    Flat Ground
  • Blade Finish:
  • Edge Type:
  • Handle Length:
    3.90 in. (9.9 cm)
  • Handle Thickness:
    0.38 in. (9.7 mm)
  • Handle Material:
    PA-66 Glass Fiber w/ Stainless Steel Lanyard Hole Insert
  • Handle Color:
  • Weight:
    0.7 oz. (20 g)
  • Sheath:
    None (See Options)
  • Knife Type:
    Non-Detectible Fixed Blade Knife
  • Brand:
  • Designer:
  • Model:
    Project ATOM Interval Fixed Blade
  • Model Number:
  • Country of Origin:
  • UPC Code:

Legal Notice. If you are not sure about the legality of any item for sale on our website, you MUST contact your local District Attorney's Office and ask them if you can carry or own suspected items in your state. Many states allow you to own suspected items but not carry them. Suspected items are not to be used as weapons or to cause bodily harm or damage to personal property in any way. It’s YOUR responsibility to know the law before you order. It’s the responsibility of the buyer, NOT THE SELLER, to ascertain, and obey, all applicable local, state, federal and international laws in regard to the possession and use of any item on this site - we cannot possibly keep track of over 40,000 weapons control laws. All equipment is sold subject to public law 90-351, title III, U.S.D., Section 2511, and any local, state or federal ordinances. Also, any attempt in entrapment by any law enforcement agency will be met with swift legal action. Oso Grande Knives will not be held liable for the misuse of any product listed on this website. For International Orders, please check with your local county and country officials or law enforcement to see if legal in your area, it is YOUR responsibility to know your laws before ordering. By purchasing any item from our site - the buyer warrants compliance with all local, state, federal and international law, and that the buyer is legally able to purchase such items from our website or catalog. Oso Grande Knives disclaims any and all liability related to improper, illegal, unintended use or modification of weapons sold through our website. The purchaser, user or participant assumes all risk of injury from any use.

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My order was delivered yesterday thank you for your fast service. I would definitely recommend you and buy from oso grande in the future. Ps I love the sebenza : )
--Elliott W - Huntington Beach, CA

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