Acquisition method (AMC)
3
FSC 5306 × BOLT,CLOSE TOLERANCE
BOLT,CLOSE TOLERANCE
5306-01-179-0902 FSC 5306
NSN 5306-01-179-0902 (also written 5306011790902; NIIN 01-179-0902) is a bolt, close tolerance in Federal Supply Class 5306, Bolts. 4 manufacturer part numbers from 3 suppliers are on record. No purchases are on record yet.
Open for bid
No open solicitations on record for this NSN right now.
Can you win it?
This item is coded to be bought directly from the actual manufacturer (AMC 3).
Suffix (AMSC)
P
Competition
Coded for a named source
AMC 3: buy directly from the actual manufacturer, second or later time. AMSC P: the government does not own the rights to the data needed for more sources. The codes describe the item's status on record, not any one solicitation. What the codes mean
What it is — can you make it?
Dimensions, the FLIS specification requirements, and the manufacturer part numbers already qualified against this NSN.
Dimensioned drawing
Generated from the federal catalog's dimensional data for this NSN — reference only, not a manufacturing drawing.
Specifications
From the federal catalog (DLA FLIS / PUB LOG) — what your part has to meet. Cited specification documents can be looked up in ASSIST Quick Search ↗, DoD's public spec repository — copy the document number in.
| Requirement | Value |
|---|---|
| THREAD CLASS AAJD | 3A |
| THREAD DIRECTION AAJF | RIGHT-HAND |
| THREAD LENGTH AASA | INCHES NOMINAL 1.000 |
| FASTENER LENGTH AASB | INCHES NOMINAL 2.312 |
| HEAD STYLE AASK | — |
| HEAD HEIGHT AASU | INCHES MINIMUM 0.378 AND INCHES MAXIMUM 0.398 |
| WIDTH BETWEEN FLATS AATB | INCHES MINIMUM 0.430 AND INCHES MAXIMUM 0.439 |
| GRIP DIAMETER AAUR | INCHES MINIMUM 0.343 AND INCHES MAXIMUM 0.353 |
| NOMINAL THREAD DIAMETER AHYM | INCHES 0.375 |
| GRIP LENGTH ANEE | INCHES NOMINAL 1.313 |
| THREAD QUANTITY PER INCH CMLP | 24 |
| MINIMUM TENSILE STRENGTH CQBC | POUNDS PER SQUARE INCH 280000 |
| PART NAME ASSIGNED BY CONTROLLING AGENCY CXCY | BOLT, DOUBLE HEXAGON, TENSION, 280,000 PSI MINIMUM TENSTILE STRENGTH, 450 DEGRESS F |
| SPECIAL FEATURES FEAT | VACUUM CADMIUM PLATED;HEAT TREAT 280,000 PSI MINIMUM ULTIMATE TENSTILE STRENGTH, RC52 MINIMUM FOR MARAGING, RC53 MINIMUM FOR AERMET;MAGNETIC PARTICLE INSPECT 100 PERCENT PER ASTM E 1444;UNDRILLED HEAD;HEAD OF BOLT TO BE FORGED;THREAD SHALL BE ROLLED AFTER HEAT TREATMENT;FATIGUE, MINIMUM TENSION-TENSION FATIGUE LOADS, HIGH LOADS EQUALS 11,800 LBS, LOW LOAD EQUALS 1,180 LBS;HIGH FATIGUE STRENGTH BASED ON 48PERCENT OF MIN. TENSTILE STRENGTH AND 10 PERCENT OF HIGH TENSTILE STRENGTH |
| MATERIAL MATT | OVERALL STEEL COMP 305 |
| MATERIAL DOCUMENT AND CLASSIFICATION MDCL | OVERALL ASSN STD SINGLE MATERIAL RESPONSE A-S5514 OR ASSN STD SINGLE MATERIAL RESPONSE A-S6532 |
| SURFACE TREATMENT SFTT | OVERALL CADMIUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION STDC | OVERALL MIL SPEC SINGLE TREATMENT RESPONSE -IL-C-6887,TY2,CL2 |
| THREAD SERIES DESIGNATOR THSD | UNF |
Manufacturer part numbers
Commercial part numbers cross-referenced to this NSN in the federal catalog — the parts that have been accepted as satisfying this stock number, and who makes them.
| Part number | CAGE | Manufacturer |
|---|---|---|
| HS6051-6-21 | 02731 | MCDONNELL DOUGLAS HELICOPTER CO INC |
| HS6051-6-21 | 16258 | SPACE-LOK, INC. DBA SPACE-LOK INC DIV SPACE-LOK |
| HS6051-6-21 | 8V613 | THE BOEING COMPANY |
| SLB361-6-21 | 16258 | SPACE-LOK, INC. DBA SPACE-LOK INC DIV SPACE-LOK |
What it pays — so you can quote
The government's own price and demand record for this NSN — what past awards cleared at, so you know where to land your quote.
Latest unit price
—
Purchases
0
Total spend
—
—
Last purchased
—
Purchase records
—
Total demand
—
Latest award total
Purchase history
No priced purchases on record for this NSN yet.
Related contract actions
Contract action totals, not unit prices — obligation amounts from USAspending for related awards, shown for context only. These do not appear on the price chart above.
No related contract actions on record.
Demand history
Every solicitation we've indexed for this NSN, open and closed — 1 on record. Closed RFQs (expired, cancelled, or awarded) stay here as a record of past demand; they never get removed.
| Solicitation | Issued | Closes / closed | Qty | Status | |
|---|---|---|---|---|---|
| SPE4A6-27-T-0846 | Oct 8, 2026 | Oct 15, 2026 | 140 | Expired | View at DIBBS → |
Open RFQs on DIBBS → DIBBS award history ↗
About this data
- Unit prices: DLA DIBBS award records — every row links to its government record.
- AMSC: latest observed value from DIBBS solicitation history as of Oct 10, 2026.
- Contract action totals: USAspending, context only.
- Full methodology →
Cite this page
Citation
NSN Explorer. "BOLT,CLOSE TOLERANCE." nsnexplorer.com, https://nsnexplorer.com/nsn/5306-01-179-0902/. Data as of October 19, 2026.
Link
https://nsnexplorer.com/nsn/5306-01-179-0902/