Born blind and deaf, a hedgehog's spines begin to emerge before its senses develop. The bristles are structured in a way that will not harm the hedgehog or the mother. These pointy bristles are stiff, hollow hairs which thicken into a ball shape under the hedgehog's skin.
A hedgehog's primary defense against a predator is to raise its spines -- which are controlled by tiny individual muscles -- and then to curl up into a ball with its spines pointing in every direction. This leaves a hole smaller than the size of a fingertip for the predator to deal with. Hedgehogs are generally eight inches long and live to be a few years old.
Known as omnivores, these mammals love to eat insects, amphibians, bird eggs, fungi, melons, berries, and snakes. Hedgehogs can eat snakes thanks to their immunity to snake venom, the result of an extra protein found in their body. - Fun Fact : An average adult hedgehog carries about five thousand, inch-long spines.
- Scientific Name : Erinaceus europaeus - Cons This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-167-0834, indicating validated use in U.S. government and defense logistics supply chains.
| material | PLASTIC SEALING ELEMENT A |
| case_style | SQUARE |
| seal_width | 0.453 INCHES MINIMUM AND 0.485 INCHES MAXIMUM IN |
| housing_bore_diameter | 4.498 INCHES MINIMUM AND 4.502 INCHES MAXIMUM IN |
| sealing_element_style | ANGULAR-OPPOSED |
| accommodated_shaft_diameter | 3.750 INCHES MINIMUM AND 3.755 INCHES MAXIMUM IN |
| accommodated_shaft_maximum_rated_speed | 4000 FEET PER MINUTE FT |
| NSN | 5310-00-167-0834 |
| NONDEFINITIVE SPEC/STD DATA | A TYPE AND 1 GRADE AND A CLASS |
| MATERIAL | STEEL OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-7952 MIL SPEC SINGLE MATERIAL RESPONSE OR QQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| OVERALL DIAMETER | 0.433 INCHES MINIMUM AND 0.458 INCHES MAXIMUM IN |
| THICKNESS | 0.029 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN |
| CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |
| CENTER HOLE SHAPE STYLE | ROUND |
| SPECIAL FEATURES | LIGHT |