The Bolt,firebrick Anchor, cataloged under National Stock Number 5306-01-220-8671, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-220-8671 |
| Item Name | Bolt,firebrick Anchor |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.240 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| Fastener Length | 2.188 INCHES MINIMUM AND 2.312 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM A-276 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | SQUARE |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.188 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN |
| Nondefinitive Spec/std Data | A CLASS AND A TYPE |
| Material | STEEL COMP 310 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MIL-B-15382 | 4/1 Identification reference U.S. Government activity |
| DLG-6-200-4500955 PIECE 43 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5306-01-220-8671 is a Bolt,firebrick Anchor, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-220-8671: Head Height: 0.240 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN; Fastener Length: 2.188 INCHES MINIMUM AND 2.312 INCHES MAXIMUM IN; Material Document and Classification: ASTM A-276 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Head Style: SQUARE. 8 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.