NIJ Standard 0101.06
Definition
The National Institute of Justice (US DOJ) body armour performance standard, published 2008. Defines five protection levels (IIA, II, IIIA, III, IV) with specific test bullets, test velocities, and BFD acceptance criteria. The dominant global reference standard; referenced directly or indirectly in UK, EU, and Indian body-armour procurement frameworks.
- Publisher
- US National Institute of Justice
- Published
- 2008
- Protection levels
- IIA, II, IIIA, III, IV
- Key test metric
- Backface deformation (BFD) acceptance criteria
- Global reach
- Referenced in UK, EU, and Indian procurement frameworks
Common questions
What does backface deformation actually measure in armour testing?+
It is the depth of the indentation left in a clay backing behind the armour panel after a test bullet impact, used as a proxy for the blunt-trauma injury a wearer would sustain even when the round does not fully penetrate the vest.
Why do the protection levels matter in a forensic ballistic examination?+
Knowing which level an armour panel was rated for lets an examiner determine whether a penetrating round exceeded the panel's certified capability, which is relevant to product-liability, use-of-force, and equipment-failure investigations.
Is armour tested under this standard automatically compliant everywhere it is sold?+
No. While it functions as the dominant reference standard globally, individual jurisdictions may layer their own procurement testing or certification requirements on top of NIJ 0101.06 compliance rather than accepting it automatically.
Related terms
- 10% Ordnance Gelatin (FBI Protocol)
- Porcine or bovine gelatin at 10 g per 100 mL water, chilled to 4°C, calibrated with a 4.5mm steel BB at 590...
- 20% Ordnance Gelatin (NATO Protocol)
- Gelatin at 20 g per 100 mL water, at 10°C. Higher concentration produces greater penetration resistance, modelling the full human body including...
- Back-Face Deformation (BFD)
- The indentation left in Roma Plastilina No. 1 clay backing material behind an armour panel after a bullet impact that does not...
- Clear Ballistics (Permagel)
- A synthetic polymer-based ballistic test medium formulated to match 10% ordnance gelatin at 4°C. Optically clear (allows high-speed video of bullet penetration),...
- IS 17051-2018
- The Bureau of Indian Standards specification for personal body armour, published 2018. Defines four protection levels tested against 9mm FMJ, 7.62x25mm Tokarev...